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

Acceptance testing is primarily concerned with verifying that a system meets user requirements and business processes. This method is typically performed at the end of the development process, where the end-users or stakeholders assess the software to confirm it aligns with their expectations and needs. It serves as a final check to ensure that all functional and non-functional requirements have been fulfilled, making it essential for determining whether a product is ready for deployment.

In contrast, functional testing evaluates individual functions of the software against specified requirements but does not necessarily encompass the broader business processes. End-to-end testing involves validating the overall workflow of the application in a real-world scenario but may not focus specifically on user requirements in the same way acceptance testing does. Smoke testing is a preliminary check to ensure that the basic functionalities of a system work and does not thoroughly assess user requirements or business processes.

Thus, acceptance testing stands out as the method explicitly dedicated to ensuring that the software aligns with user demands, making it the correct choice in this context.