What is the first phase of the SDLC according to NIST?

The first phase of the Software Development Life Cycle (SDLC) according to NIST is initiation. This phase is critical as it lays the foundation for the entire project. During the initiation phase, the purpose, objectives, and scope of the project are defined. It involves identifying stakeholders, determining the feasibility of the project, and evaluating potential risks and benefits. This careful planning ensures that all parties have a clear understanding of what the project entails, which is essential for guiding the subsequent phases of development, acquisition, implementation, and eventually, disposal.

Initiating a project effectively allows for better alignment with organizational goals and enhances the likelihood of successful outcomes. As a result, this phase focuses on gathering high-level requirements, understanding business needs, and determining the project's overall direction, making it a cornerstone of the SDLC.