How have you applied customer requirements in project implementation?

When implementing a project, I always start with a thorough analysis of the customer's requirements. I hold meetings and clarify details to understand the business logic and end goals. Then I create a technical specification that reflects all key points.

During development, I regularly check against the requirements to stay on course. I use an iterative approach: after implementing each functional part, I demonstrate the result to the customer for feedback and adjustments.

For example, if the customer asks to implement an API for data processing, I first clarify the input data format and expected result, then write the code, cover it with tests, and show an intermediate result to ensure everything meets expectations.