What key concept does ISO 29148 define in relation to software requirements?

ISO 29148 is a crucial standard that specifically addresses the processes and products associated with requirements engineering. This standard provides a comprehensive framework for understanding how software requirements should be gathered, analyzed, documented, and managed throughout the software development life cycle.

By focusing on the processes and products of requirements engineering, ISO 29148 highlights the importance of not only documenting requirements but also ensuring that there is a systematic approach to requirement management. This includes establishing clear communication between stakeholders, aligning the development with user needs, and iteratively refining requirements to adapt to changing conditions.

In contrast to the other options, the standard does not limit itself to just documentation, as it encompasses broader activities within the requirements engineering field. It also does not cover methods for software testing or provide implementation guidelines, as those fall outside the domain of requirements engineering. Instead, the focus remains firmly on the foundational aspects of managing software requirements effectively, which is essential for delivering successful software projects.