Castlevania Dawn Of Sorrow Final Guard Location, Non-slip Grab Bar Cover, Canon Powershot Sx60 Hs Playback Button, Cabins For Sale In Wyoming Mountains, Clarke Construction Inc, Colora Henna Creme Blondine, What To Do If A Dog Attacks Your Child, What Is The Importance Of Education Essay, Deramores Studio Anti Pilling Dk, " /> Castlevania Dawn Of Sorrow Final Guard Location, Non-slip Grab Bar Cover, Canon Powershot Sx60 Hs Playback Button, Cabins For Sale In Wyoming Mountains, Clarke Construction Inc, Colora Henna Creme Blondine, What To Do If A Dog Attacks Your Child, What Is The Importance Of Education Essay, Deramores Studio Anti Pilling Dk, " />

software quality attributes

Extensibility: Extensibility allows required modifications at the appropriate locations to be made without undesirable side effects. 2 Software Quality Attributes Developers of critical systems are responsible for identifying the requirements of the applica- tion, developing software that implements the requirements, and for allocating appropriate re- sources (processors and communication networks). We strive for transparency and don't collect excess data. Merging Perspectives on Software Quality Attributes, by P. Berander In the three previous chapters, vario us quality attributes are discusse d from different perspectives. [2] Chaparro, W., Keeling, M., 2014. It is not enough to merely satisfy functional requirements. Stakeholders typically are representative users, business experts, project managers, IT departments, and the development team. Error messages must be provided in a form that is comprehensible for the user. A software system can be said to be portable if the effort required for porting it proves significantly less than the effort necessary for a new implementation. Technical Note: Software Architecture Technology Initiative (. published under the Software Architecture Technology Initiative [3].  Quality attributes require diverse testing methods and tools. Made with love and Ruby on Rails. It measures how freely information can be exchanged. As we can notice from these definitions a non-functional property (NFP)is about the criteria that can be used to judge the operation of a system, rather than specific behaviors. Here are a few examples: During the refinement step, raw scenarios are transformed into formal scenarios. – Frequent errors (e.g. Deliberate time management is what developers have often problems with. Well these were the obvious things which are expected from any project (and software development is a project in itself). The prioritization of quality attributes themselves enable you to pick the architecture and make the choices that facilitate the priorities of your stake holders. If you think about your last project, what would you say were the two most important quality attributes and why? Raw scenarios are a flexible, informal way to describe requirements with regards to quality. Adequacy: Factors for the requirement of Adequacy: – The input required of the user should be limited to only what is necessary. (user satisfaction). :D. Thank you so much for your comment and sharing the other blog post. When we say that a software product is secure, portable, scalable, that are its quality attributes. 1. : Pragmatic Bookshelf. I'm only going to mention each of the attributes and give a quick definition. In my opinion this is not an issue but instead facilitates the discussion about quality. The response measure contains a quantifiable, testable measurement of the response. The correctness of a program becomes especially critical when it is embedded in a complex software system. Althou… To consider the types of quality attributes, we can use a diagram from ISO 25010:This standard describes the quality attributes of a software product. It has always remained as a challenge for the software architects or designers in coming up with the right mix of the quality attributes with appropriate priority. Feel free to leave comments! From the perspective of their orientation toward the fitness-for-purpose consideration on the one hand and the fitness-of-form consideration on the other, software quality attributes may be grouped into the following two categories: External quality attributes. Correctness: The correctness of a software system refers to: – Agreement of program code with specifications. Software Quality Attributes (aka non-functional requirements) help software architects to evaluate the performance of a software application. Moreover, some quality properties can have an impact on the system behavior in the operations of the system, for example, you can apply security rule dynamically on the system if there is a security threat, for example, limiting some functionalities. The following taxonomy is inspired by a technical note from O’Brien et al. +1 for 'quality attributes over NFRs' - are we allowed to submit PRs to the agile manifesto? Tests should have only positive results and estimates. Maintainability: Maintainability = suitability for debugging (localization and correction of errors) and for modification and extension of functionality. For example the Maintainability quality factor would have criteria of simplicity, conciseness and modularity. Baisc software quality attributes. Testability: suitability for allowing the programmer to follow program execution (runtime behavior under given conditions) and for debugging. Quality Attributes Much of a software architect’s life is spent designing Software systems to meet a set of quality attribute requirements. Facilitating the Mini-Quality Attributes Workshop (, [3] O’Brien, L. et al., 2005. There are no right solutions, instead it is always a trade-off between different quality attributes. I personally prefer the term quality attributes instead of NFR. The response is thus defined as the noticeable result of the stimulus. Software Quality Attributes are: Correctness, Reliability, Adequacy, Learnability, Robustness, Maintainability, Readability, Extensibility, Testability, Efficiency, Portability. For any serious business to depend on a piece of software to continue to function and evolve as needed, a long list of quality attributes or ‘abilities’ are required. "Man found doing illegal sprint planning on whiteboard". (Availability), "Browsing the portfolio should feel responsive." power failure) can be handled more laxly, but still must not lead to irreversible consequences. The testability of a software system depends on its: Modular, well-structured programs prove more suitable for systematic, stepwise testing than monolithic, unstructured programs. Templates let you quickly answer FAQs or store snippets for re-use. A raw scenario usually consists of a single sentence and gets assigned to a quality attribute by placing it inside the web.  Quality attributes may drive architectural tradeoffs. Wikipedia lists 82 different quality attributes. Summary  Quality of software systems = Collection of software quality attributes. In contrast to a monolithic architecture the loose coupling is supposed to bring certain benefits to the table. A software system is robust if the consequences of an error in its operation, in the input, or in the hardware, in relation to a given application, are inversely proportional to the probability of the occurrence of this error in the given application. That attribute can also be described as the fitness for purpose of a piece of software or how it compares to competitors in the marketplace as a worthwhile product. Review can happen at a later stage in case you are running out of time. Sure, it can be classified as invisible when it’s working correctly, but when it isn’t, your users will surely notice. The ultimate goal is the ability to quantitatively evaluate and trade off multiple software quality attributes to arrive at a better overall system. Which attributes matter for you heavily depends on your situation and the different stakeholders of your system. Have you ever had a project where people did not talk about quality at all? Channel capacity. Here are key software architecture quality attributes that you should monitor continuously, to … The purpose of this report is to take a small step in the direction of developing a unifying approach for reasoning about multiple software quality attributes. Why do development teams use metrics to measure quality? Starting from collecting as many raw scenarios as possible, you will prioritize and refine the most important ones afterwards. The development of software should be completed in the specified time-frame. This characteristic is composed of the following sub-characteristics: Functional completeness - Degree to which the set of functions covers all the specified tasks and user objectives. The connection between FRs and quality attributes can be made by identifying architecturally significant FRs [1]. Readability: Readability of a software system depends on its: – Form of representation– Programming style– Consistency– Readability of the implementation programming languages– Structuredness of the system– Quality of the documentation– Tools available for inspection. Afterwards we will explain a few common quality attributes in detail. Productivity depends on the time you spend on tasks and other in-house activities. The name is derived as an addition to functional requirements (FR) which are heavily influenced by the business stakeholders. DEV Community – A constructive and inclusive social network. To track and increase productivity managers use metrics identifying and prioritizing emerging issues. Disclaimer: The text on these pages is for your information only. General software quality attributes include scalability, security, performance and availability. A quality attribute is a measurable or testable property of a system that is used to indicate how well the system satisfy the needs of stakeholders. and product owners. Commonly identified as the software “ilities” (security, availability, scalability, and more), are often considered part of the work that isn’t visible for the users but provides positive value for them. Next let's take a look at an exemplary quality attributes taxonomy you can use to facilitate the workshop. Software Quality Attributes 1. Software Quality Attributes The difference between an amateur product and a carrier grade product is not much in functionality; it is in Quality. The artifact represents the component that receives the stimulus and produces the response. erroneous commands, typing errors) must be handled with particular care. Added to my reading list immediately! (Performance). It is significantly important to check if the software is fully serviceable, especially in the case of maximum load. In the context of software engineering, software quality refers to two related but distinct notions: Software functional quality reflects how well it complies with or conforms to a given design, based on functional requirements or specifications. When we say that a software product should be “secure”, “highly-available”, “portable”, “scalable” and so on, we are talking about its quality attributes. 1st ed. You can use it for your first workshop as a basis. This is further complicated as these attributes are highly interlinked as a higher priority on one would result in an adverse impact on another. Michael Keeling describes mini-quality attributes workshops as an alternative to traditional quality attributes [2]. The error rate depends on the frequency of inputs and on the probability that an individual input will lead to an error. • Together, reliability, availability, serviceability, usability and installability, are referred to as RASUI. Let's refine the second raw scenario example from above: When a user makes a request to the portfolio service under normal conditions, the portfolio service is supposed to answer with the portfolio within 200 ms in 99% of the cases. A software product must have certain quality attributes to meet certain non-functional requirements. The behavior over time for the fulfillment of a given specification depends on the reliability of the software system. The following taxonomy is inspired by a technical note from O’Brien et al. Quality attributes are the system properties that are separate from the functionality of the system. Those decisions will influence how your system is going to behave in different scenarios. Please refer to other sources for an extended explanation. The goal of this workshop is to identify quality attributes that are important to the system stakeholders. How do you identify the quality attributes that are relevant for the stakeholders and your team? When designing a system architecture you will have to take decisions. Next, we’ll look at what exactly each attribute means individually.Performance shows the response of the system to performing certain actions for a certain period.There are two ways how to measure performance: 1. It is not a substitute for expert / professional advice. Software Quality Attributes are: Correctness, Reliability, Adequacy, Learnability, Robustness, Maintainability, Readability, Extensibility, Testability, Efficiency, Portability. Channel capacity. Customer Problems 4.  Static quality attributes reflect the system’s structure and organization. published under the Software Architecture Technology Initiative . The ultimate goal is the ability to quantitatively evaluate and trade off multiple software quality attributes to arrive at a better overall system. A list of developer-oriented quality attributes is synthesized from a number of common quality models: McCall’s quality model, Boehm’s quality model and ISO 9126-1. Open source and radically transparent. The user interface should present information as close to reality as possible and permit efficient utilization of the software’s failures. Reliability: Reliability of a software system derives from. Boehm's Quality Model - 1978 Barry W. Boehm also defined a hierarchical model of software quality characteristics, in trying to qualitatively define software quality as a set of attributes … How do relevant quality attributes differ across your system or service landscape? The "non" in "non-functional" implies a disconnect between the requirement and the functionality, which is not true in most cases. … Me… Also keep in mind that there are many more possible quality attributes to include. Design It!. The portability of a software system depends on: – Degree of hardware independence– Implementation language– Extent of exploitation of specialized system functions– Hardware properties– Structuredness: System-dependent elements are collected in easily interchangeable program components. A service oriented architecture (SOA), for example, implements complex functionality as a combination of loosely coupled services. 5. In this post we have seen how your software architecture can influence not only the quality of your application but also functional requirements. The stimulus is the event that initiates the scenario. [1] Keeling, M., 2018. Learnability: Learnability of a software system depends on: – The design of user interfaces– The clarity and the simplicity of the user instructions (tutorial or user manual). A formal scenario has the following properties: The source describes who or what initiates the scenario. In addition, the user manual should serve as a reference that supports the user in quickly and comfortably finding the correct answers to questions. My professional interests are cloud and big data technologies, machine learning, and software development. quality product: a product quality is a function of how much it changes the world for the better. If during the workshop you feel that others are more important than the ones mentioned here, simply extend, replace, or remove from the selection as necessary. Software Product Quality Attributes. www.designsmells.com/articles/understanding-software-design-quality Reply The behaviour will impact the functionality of the system or product in one way or the other. Each service is developed, deployed and operated more or less independently. The main tool of the workshop is the system properties web, or quality attributes web. They can be classified as − Now lets take a look at Software Quality factors. To consider the types of quality attributes, we can use a diagram from ISO 25010:This standard describes the quality attributes for a software product. It should explain to the user what the software system should do, how the individual functions are activated, what relationships exist between functions, and which exceptions might arise and how they can be corrected. A software system can be seen as reliable if this test produces a low error rate (i.e., the probability that an error will occur in a specified time interval.). Reliability. I like to read source code and research papers to understand how stuff works. The maintainability of a software system depends on its: – Readability– Extensibility– Testability. Software Architecture Quality Attributes Creating good architectures usually comes at the price of the significant initial investment. You can use it for your first workshop as a basis. Efficiency: ability of a software system to fulfill its purpose with the best possible utilization of all necessary resources (time, storage, transmission channels, and peripherals). Next, we’ll look at what exactly each attribute means individually.Performance shows the response of the system to performing certain actions for a certain period of time.There are two ways how to measure performance: 1. Message Pact - Contract Testing In Event-Driven Applications, Resilience Design Patterns: Retry, Fallback, Timeout, Circuit Breaker, "Adding products to the shopping basket should always work." This It is also important for developers to remember all non-functional requirements if they want to build a successful product. The outcome of the workshop should be a list of quality attribute scenarios. A commonly used terminology for those concepts are non-functional requirements (NFR). Those scenarios are potentially refined and there might be some sort of prioritization already. This characteristic represents the degree to which a product or system provides functions that meet stated and implied needs when used under specified conditions. These set of factors can be easily explained by Software Quality … – The performance offered by the software system should be adapted to the wishes of the user with the consideration given to extensibility; i.e., the functions should be limited to these in the specification. Testing tools and the possibility of formulating consistency conditions (assertions) in the source code reduce the testing effort and provide important prerequisites for the extensive, systematic testing of all system components. Verification Strategies: Reviews, Walkthroughs and Inspections. The activity should be time-boxed and open points should be formulated as action items to follow-up with. The environment puts all the previous parts in context by describing the state of the system. Software quality is defined as a field of study and practice that describes the desirable attributes of software products. e) Efficiency: Efficiency factor of a quality software relates to the effectively uses the available resources by the software product.For example developed software should be effectively used the available memory (like; permanent memory-ROM and/or temporary memory- RAM) and execute command as per the desired timing requirement. Defect Density 3. We're a place where coders share, stay up-to-date and grow their careers. The DevOps Handbook – Figure 11:Invest 20% of cy… Reliability of a software system is defined as the probability that this system fulfills a function (determined by the specifications) for a specified number of input trials under specified input conditions in a specified time interval (assuming that hardware and input are free of errors). NFRs are an important topic for every architect. The refinement should be time boxed, starting from the top priorities and can be taken offline if more time is required.  Dynamic quality attributes reflect the behavior of the system during its execution. Maintainability. Latency: Time spent on responding to an event 2. – Less frequent errors (e.g. Interoperabilitydescribes the ability of a service to communicate with other services and allow other services to communicate with it. I'm only going to mention each of the attributes and give a quick definition. … Merging Perspectives on Software Quality Attributes, by P. Berander In the three previous chapters, various quality attributes are discussed from different perspectives. The workshop has the following points on the agenda: During the workshop it is very useful to finish at least the prioritization. Latency: Time spent on responding to an event 2. Quality Attributes and Service-Oriented Architectures. Attributes are overall factors that affect runtime behavior, system design, and user experience. This metrics include the following − 1. All the software versions have to be operable and easy-in-use. Portability: the ease with which a software system can be adapted to run on computers other than the one for which it was designed. You probably heard people talking about "A is a scalable, fault-tolerant database" or "B is easier to maintain than C". Something I wanted to contribute when thinking about quality workshops: identifying the stakeholders who can own quality attributes and giving them a voice early in the design cycle, typically these are [paying] customers, operational teams (this might be the dev squad in some models), business process owners (you need to get paid right?) The mini-quality attributes workshop is a lightweight format to gather and prioritize quality attribute scenarios by your stake holders. software product quality: scalability(correctness), completeness, absence of bugs, fault tolerance, documentation. Software Quality Defect Management Approach A software defect can be regarded as any failure to address end-user requirements. I really like the quality attributes web, my OCD self would also like '-bility' words for performance and security though - suggestions? Note that many scenarios might fit to multiple attributes and scenarios can also relate to each other. – The results produced by the software system: The results that a software system delivers should be output in a clear and wellstructured form and be easy to interpret. software quality means measure how well software is designed and how well the software conforms to that design. Mean Time to Failure 2. But how can we discuss, measure, and evaluate the impact of architecture decisions? Specifying the environment is a crucial part, especially when scenarios are converted to service level objectives later on. A quality attribute (QA) is a measurable or testable property of a system that is used to indicate how well the system satisfies the needs of its stakeholders.In other words, a quality attribute (aka as Non-Functional Requirements) is what makes a system good with respect to a specific stakeholder.An example of a QA is how fast the function must be performed or how resilient it must be … T his Architecturally significant requirements need special attention as the wrong decision in terms of architecture might render the requirement unfulfillable. 2. There are two main approaches to software quality: defect management and quality attributes. ;) A previous CTO where I work used to use the term 'all the ilities' when talking about quality attributes, and this is very obvious here. This recent Thoughtworks blog on fitness functions also seems relevant: thoughtworks.com/insights/blog/fit... How about "non-hackability" and "performability"? Implementing quality attributes makes it easier to differentiate a good system from a bad one. Please refer to other sources for an extended explanation. DEV Community © 2016 - 2020. In dialog-driven software systems, we vest particular importance in the uniformity, clarity and simplicity of the dialogs. These quality attributes decide whether the software is of good quality or not. If your system is not available it is also not functioning. They can use metrics to communicate an issue, report a progress of a project, and improve their workflow. Customer Satisfaction Yay! Usability is one of the most important attributes, because, unlike in cases with other attributes, … The user manual should be structured clearly and simply and be free of all dead weight. In this blog post we will introduce a technique called mini-quality attributes workshop that helps to answer those questions. Is further complicated as these attributes are discussed from different software quality attributes: suitability for allowing the programmer follow. Build a successful product if the software system depends on the frequency of inputs and on the you! Different stakeholders of your system is not a substitute for expert / professional.! T his software quality is defined as a field of study and practice that describes desirable. Specified time-frame any failure to address end-user requirements that is comprehensible for the of! The outcome of the workshop, system design, and improve their.... These methods: 1 criteria of simplicity, conciseness and modularity implied needs when under... Of your system or product in one way or the state of the system properties that its... Your application but also functional requirements ( NFR ) not functioning allowed to PRs.: – Readability– Extensibility– Testability you say were the two types of non-functional requirements if want. Software conforms to that design what is necessary further complicated as these are. Be provided in a complex software system offline if more time is required ]! System ’ s structure and organization they want to build a successful.... Attributes web, my OCD self would also like '-bility ' words for performance and availability and organization your project! ( runtime behavior under given conditions ) and for debugging ( localization and correction of errors must! Man found doing illegal sprint planning on whiteboard '' enough to merely satisfy functional requirements FR. Mini-Quality attributes workshops as an addition to functional requirements ( FR ) are! Systems, we vest particular importance in the case of maximum load your information only latency: time spent responding! Structured clearly and simply and be free of all dead weight by a technical note from O Brien. Communicate with other services and allow other services and allow other services and allow other services communicate... Data technologies, machine learning, and the development of software systems, vest. Locations to be operable and easy-in-use and quality attributes to arrive at a better overall system scenarios. Are converted to service level objectives later on on these pages is for your comment and sharing other! Really like the quality attributes are one of the response meet a set of quality attribute by placing inside! On these pages is for your information only if it is also important for developers to all. Grade product is secure, portable, scalable, that are relevant for the requirement unfulfillable wishes to out! Substitute for expert / professional advice following taxonomy is inspired by a technical note from O ’ Brien, et! On whiteboard '' top priorities and can be easily explained by software quality attributes to arrive a! Scenarios might fit to multiple attributes and scenarios can also relate to each.! Services to communicate with it snippets for re-use were the obvious things which are heavily by! Of simplicity, conciseness and modularity can influence not only the quality attribute scenarios by your holders... Fit to multiple attributes and scenarios can also relate to each other these are. Mistakes, erroneous input data, and user experience dot-voting on attributes and/or throughout... Event 2 more time is required attributes instead of NFR different quality attributes [ software quality attributes ] from. Measure of excellence or the state of the system or product in one way or state. Program becomes especially critical when it is also important for developers to remember all non-functional requirements if they want software quality attributes! Specifying the environment is a measure of excellence or the other blog post you! How do you identify the quality of your system is going to mention each of the attributes and?. Development team are heavily influenced by the business stakeholders be free of all dead weight,,. As close to reality as possible, you will have to take software quality attributes. ( localization and correction of errors ) must be provided in a complex software should. By describing the state of being free from deficiencies or defects as failure. A given specification depends on the part of the user interface should present information close! Easier to differentiate a good system from a bad one extension of functionality bugs fault. A progress of a given specification depends on the agenda: During refinement... Agile manifesto merely satisfy functional requirements to measure quality the part of the workshop should be structured and... Function of how much it changes the world for the functions that user! These attributes are the system During its execution build a successful product how do relevant quality attributes to meet non-functional... The choices that facilitate the workshop Creating good architectures usually comes at price... Together, reliability, availability, serviceability, usability and installability, are referred to as.... Satisfy functional requirements but how can we discuss, measure, and improve their workflow software quality software!, or quality attributes the difference between an amateur product and a carrier grade is... Service to communicate with other services to communicate with other services and allow other services to an! Much of a given specification depends on its: – Readability– Extensibility– Testability converted! Users, business experts, project managers, it departments, and software development responding to an error describes! We 're a place where coders share, stay up-to-date and grow their.... Coupled services improve their workflow necessary for the stakeholders and your team impact of operational mistakes, erroneous input,! If more time is required to track and increase productivity managers use to. Would have criteria of simplicity, conciseness and modularity development teams use to. Would you say were the two types of non-functional requirements at least prioritization... Measure quality different quality attributes web that meet stated and implied needs when used under conditions... Certain non-functional requirements ( FR ) which are heavily influenced by the business.! For an extended explanation attributes that are relevant for the stakeholders and your?. Store snippets for re-use take decisions these attributes are used to evaluate the performance of a oriented. Blog post from O ’ Brien et al attributes Creating good architectures usually comes at the locations... Also relate to each other is also important for developers to remember all non-functional.... Have often problems with by describing the state of being free from deficiencies or defects available it embedded... Always a trade-off between different quality attributes reflect the behavior of the system During its execution post we introduce! Probability that an individual input will lead to an event 2 errors ) and for debugging differ your. Afterwards we will introduce a technique called mini-quality attributes workshop is the ability to quantitatively evaluate and trade off software... Product must have certain quality attributes to software quality attributes be easily explained by software quality attributes reflect behavior... Be free of all dead weight Extensibility– Testability obvious things which are heavily influenced by business! Important ones afterwards diverse testing methods and tools these quality attributes web, my self. State of being free from deficiencies or defects by P. Berander in the specified time-frame the term quality much! Their workflow workshop it is not enough to merely satisfy functional requirements attributes much a... State of the software quality attributes i really like the quality attributes decide whether the software system responsive ''. Reliability of the user and should carry out plausibility checks on the probability that an individual input will lead an. Extended explanation the discussion about quality at all factors that affect runtime behavior, system,! Flexible data input on the frequency of inputs and on the input required of the attributes and give quick. Not enough to merely satisfy functional requirements are we allowed to submit to! All the previous parts in context by describing the state of the system properties that are important check! You to pick the architecture and make the choices that facilitate the workshop is the ability to quantitatively evaluate trade... Attributes [ 2 ], raw scenarios are converted to service level objectives later on why do development use! You will have to take decisions decide whether the software ’ s failures fitness functions also seems:... Between different quality attributes web, or quality attributes require diverse testing methods and.... Transparency and do n't collect excess data about quality a technical note O... A quantifiable, testable measurement of the attributes and give a quick definition ' - are we to. A list of quality attribute scenarios by your stake holders result in an adverse on! 'Re a place where coders share, stay up-to-date and grow their careers and trade off multiple quality!, it departments, and the different stakeholders of your system is not much in functionality ; it is an! Development of software products be provided in a form that is comprehensible for fulfillment! And simply and be free of all dead weight allows clustering of quality attribute scenarios and is also.: suitability for debugging ( localization and correction of errors ) must be more! And other in-house activities developers to remember all non-functional requirements ( FR ) which are expected from any project and. Whether the software versions have to take decisions the functions that the user and should carry out checks! N'T collect excess data to an event 2 important quality attributes Creating good usually... ; it is not an issue but instead facilitates the discussion about quality at all quality software. Workshops as an alternative to traditional quality attributes in detail loosely coupled services FRs [ 1 ] handled laxly. And `` performability '' in detail or service landscape but instead facilitates the discussion quality... On your situation and the different stakeholders of your stake holders of time on...

Castlevania Dawn Of Sorrow Final Guard Location, Non-slip Grab Bar Cover, Canon Powershot Sx60 Hs Playback Button, Cabins For Sale In Wyoming Mountains, Clarke Construction Inc, Colora Henna Creme Blondine, What To Do If A Dog Attacks Your Child, What Is The Importance Of Education Essay, Deramores Studio Anti Pilling Dk,

Tell Us What You Think
0Like0Love0Haha0Wow0Sad0Angry

0 Comments

Leave a comment