What is included in a Software Requirements Specification (SRS) document?

A Software Requirements Specification (SRS) document is a comprehensive description of the intended purpose and environment for software under development. It includes all functional requirements, which define specific behaviors, functions, and responses of the system in various scenarios. Additionally, it encompasses non-functional requirements that specify criteria such as performance, usability, reliability, security, and compliance.

Including both types of requirements is essential for providing a complete understanding of what the software is expected to achieve, which is critical for developers, testers, and stakeholders. The SRS acts as a foundation for communication, project development, and future reference throughout the software lifecycle. By encompassing all functional and non-functional requirements, the SRS serves as a guide to ensure the software meets the defined needs and quality standards.

The other options fall short of capturing the full scope of the SRS. A marketing analysis addresses market fit and competitive strategy, which is not typically detailed in a technical specification document. Focusing only on functional requirements ignores essential non-functional aspects that contribute to user experience and system performance. Lastly, while a project timeline may be relevant for project management documents, it does not belong in an SRS, which is strictly focused on the requirements rather than the scheduling and management of the project.