AQCLab is a laboratory for software and data quality evaluation in conformance to the ISO/IEC 25000 series of standards. As such, requirements are a fundamental element in the evaluations that are carried out, as they are the input for software Functional Suitability and Data Quality, two of the evaluacions carried out by the laboratory. Software Maintainability evaluations are also carried out by the laboratory, where the requirements on applicable metrics and thresholds to be met have been established by the laboratory. Moreover, the lab staff also has extensive experience as auditors of software lifecycle processes, which has allowed them to see how requirements are managed in multiple companies. In this article we present AQCLab’s experience gained over the years on requirements management and requirements definition both as software product and data quality evaluators and as software development process auditors.