What Is Design Validation and Verification and Why It’s Crucial

Design verification and validation are integral to the digital product development process. The verification procedure ensures the project is built according to the agreed requirements, while validation analyzes the result to meet users’ needs. These terms go hand in hand and are usually confused with one another. Design verification and validation in product lifecycle should always be completed. Verification directly influences product quality and performance. Validation determines the user’s successful adoption of the project.

Neglecting those processes doesn’t only lead to creating technically poor products that evoke customer dissatisfaction. However, this also violates the key requirements of ISO 9001:2015 — a globally acknowledged benchmark for quality management. To avoid this scenario, find an explanation of design verification and validation.

What Is Design Validation?

Design validation is the procedure of estimating the product’s capability to meet user needs and operate in a real-world environment. It is conducted after development to address the question: “Did we create the right product”? Design validation aims to build a bridge between end customers, including stakeholders’ expectations and engineering needs. Even if your project meets all the technical requirements, it does not guarantee high user adoption and satisfaction. Let’s suppose you have built a mobile banking application. The engineers have checked all the functions so the product can process transactions, integrate with the backend, and provide a secure experience. However, when conducting design validation, a group of users reported that it was difficult to locate the purchase history, and another group spotted that the font was too small. Another one claimed the app lacked a two-step verification function. So you have accepted this feedback and entered the market with a high-quality product.

Design Validation Process

During the design validation step, quality assurance (QA) teams conduct these activities:

• Requirements review. This stage encompasses the assessment of user and functional requirements. It confirms that the final product version meets the goals set at the beginning of the development process.

• Design review. QA specialists, designers, engineers, and domain professionals verify design feasibility during the design review procedure. They check the correctness of the outputs.

• Risk analysis. “A danger foreseen is half avoided”. And this is what happens during risk analysis. Specialists research the project’s challenges with the existing design and functionality.

• Usability testing. This activity involves observing real users interact with the platform or its final version. It gives valuable insights regarding the ease of product use, user logic, and accessibility needs.

Benefits of Design Validation

The design validation process offers many advantages that relate to usability, marketability, and overall product quality, including these:

• Early error detection. Design validation precedes product launch and, thus, prevents your team from receiving bug reports from real users. Being conducted during the development, this process helps to uncover the issues earlier and fix them before they grow into something big.

• Improved product quality. Testing during validation estimates product reliability, usability, and functionality. By receiving results on software performance, you can improve it and provide the best version for your customers.

• Saved costs. Identifying the flaws during the creation procedure saves your budget from redesigning the product at the final stages or after release.

What Is Design Verification?

Design verification delves deeper into comparing outputs with the inputs. This process analyzes the system according to the requirements set before development. Design verification doesn’t only include research of the existing functionality. It might compare the product with its previous version or other application.

The goal of conducting design verification in the product lifecycle is to confirm that the platform functions as planned before it reaches end customers.

In the banking application example, design verification will go this way. The design inputs can be user requirements such as quick transactions, a safe environment, an easy-to-use interface, and compliance with regulations. Design output will consist of flow diagrams, high-fidelity wireframes, and requirements documentation. For instance, testers will check if two-factor verification is enabled, if additional verification for fund transfer is present, if the balance is reflected correctly, etc.

The outcomes of design verification will confirm that the banking app is bug-free and user-friendly.

Design Verification Process

When going through the design verification process, QA teams get involved in these stages:

• Unit testing. At this step, testers check every brick of the building: every module. They verify every unit’s performance and functionality separately from the whole system.

• Integration testing. After verifying each component, research the modules’ ability to work seamlessly together.

• System testing. During system testing, QA specialists analyze the whole system and its functional and non-functional aspects.

• Acceptance testing. The final stage of the design verification process appears during software testing in natural conditions and by real users.

Benefits of Design Verification

If you implement design verification during the product development lifecycle, you can expect to get these benefits:

• Product compliance with specifications. Design verification ensures the development process goes as intended. It checks the product’s ability to adhere to set requirements that lead to technical accuracy.

• Error fix before product launch. With design verification applied regularly during software creation, it is possible to uncover all the hidden defects. When fixed at every stage, the result is an error-free application ready to hit the market with its excellent quality.

• High customer satisfaction. Who wouldn’t like to use a product that is bug-free and customer-oriented? Design verification confirms your project meets all the requirements. So, you can expect customers to recommend your software and grow your audience organically.

Design Verification vs Validation

The difference between design verification and design validation is not easy to spot. Some confuse these processes and say that they are the same. They both aim to ensure product quality and success when analyzing their outcome. But they have many distinctive features.

Focus

The verification process focuses on analyzing whether the product is built right and in adherence to specifications. For instance, testers might analyze whether the system has two-factor authentication enabled and working properly as outlined in the instructions.

The validation procedure focuses on the product meeting user needs. It confirms the platform’s ability to deliver outputs effectively in the real world. The example would be an answer to whether users can transfer funds without errors or interrupts.

Purpose

For design verification, checking if the product follows all technical specifications and complies with standards is essential. For design validation, the goal is to analyze if the project meets user expectations and can function in practical use.

Timing

Verification takes place during design development. It can be applied through every stage as product design develops. Validation is used at the final stages, usually during testing or post-development.

Level of Abstraction

All technical details are important in a verification process, whether separately or in one system. However, during validation, testers look at the project as a whole.

Consequences of Neglecting

If you skip the design verification process, you can face technical issues, non-compliance with regulations, and costly reworks because of the bugs. Neglecting validation leads to poor user adoption and low customer satisfaction.

The Importance of Design Verification and Validation

Despite all the distinctive features, design verification and validation are complementary procedures that address product quality. If applied together, they can target the technical side of the platform and the user-oriented part of the development. Verification focuses on designing the product correctly, and validation focuses on creating the right product.

Both processes don’t work independently, and skilled QA professionals must apply them. Those specialists perform numerous tasks. They analyze the testing strategy, tools, methods, and deadlines. QA teams are responsible for conducting testing by inspecting the code, outputs, and outcomes. They interact directly with users and gather valuable feedback. And they also transform results into an actionable plan.Process clarity is vital when applying design verification and validation into the product development lifecycle. To build those procedures effectively, testers need to set clear objectives, use standardized methods and tools, maintain detailed documentation, and apply a continuous refinement approach.

Conclusion

Design verification and validation are crucial in creating a high-quality, user-friendly product. These methods examine the project from different perspectives: technical requirements and user acceptance. So, by applying them at the right time in a development lifecycle, you can detect errors, fix them before lunch, and save yourself and your budget from reworks.