What is the primary purpose of the Preliminary Investigation phase in the Software Development Lifecycle?

The primary purpose of the Preliminary Investigation phase in the Software Development Lifecycle (SDLC) is to assess the feasibility of the proposed project. During this phase, project stakeholders evaluate whether the project is worth pursuing based on various factors, including technical, economic, operational, and legal feasibility. This assessment helps to determine if the project aligns with the organization's goals and resources, ensuring that the necessary groundwork is in place before committing significant time and resources to development.

By focusing on feasibility, the Preliminary Investigation phase helps to mitigate risks and financial losses that could arise from proceeding with impractical or unviable projects. It lays the foundation for subsequent phases of the SDLC by establishing a clear understanding of the project's potential constraints and opportunities, guiding future decision-making processes.

The other options described—converting models into an actual system, testing the system after deployment, and gathering user requirements—are important steps in their own right but are not the primary focus of the Preliminary Investigation phase. They typically occur in later stages of the SDLC, after the initial feasibility has been established.