Which testing method focuses on the user's requirements and business processes?

Acceptance testing is specifically designed to validate whether the software meets the agreed-upon requirements and is suitable for use from the end user's perspective. It often involves the stakeholders or clients who assess the system's functionality against their business needs and specifications. This process ensures that the developed application aligns with user expectations and business processes before deployment.

In the context of agile methodologies, acceptance testing can include user stories and criteria that directly reflect the user's needs. It serves as a final check to confirm that the software functions correctly in real-world scenarios and meets the desired operational standards. Therefore, its focus on user requirements and business processes makes it distinct among testing methods.

Other methods, while they may touch on user needs, do not specifically prioritize this aspect as their primary aim. Functional testing, for example, verifies that features work according to specifications but does not necessarily involve user input. End-to-end testing assesses the entire workflow of the application but may not always directly correlate with user requirements and business processes. Smoke testing serves as a preliminary check of basic functionalities but does not delve deeply into user-centric validation.