During which phase of the System Development Life Cycle is ongoing system functionality ensured?

The Maintenance Phase is crucial in the System Development Life Cycle (SDLC) as it focuses on ensuring that the system continues to function properly after its initial deployment. During this phase, developers and system administrators address any issues or bugs that arise, implement updates to improve functionality, and ensure that the system remains aligned with evolving user needs and business requirements. This ongoing support not only keeps the system operational but also involves making enhancements based on user feedback and changing technologies.

The Maintenance Phase typically follows the Implementation and Deployment Phases, where the system is first tested and put into a live environment. Activities in this phase are vital for adapting to new challenges and ensuring that the system delivers the desired outcomes effectively over time.