Most Time-Consuming Phase in SDLC: In my opinion, the most time-consuming phase in the SDLC is often the Testing Phase.Consequently, it tends to be time-consuming due to the comprehensive nature of testing activities and the need to address any issues that arise before software deployment.* User Acceptance Testing (UAT): UAT involves stakeholders from the user community, and coordinating their availability and feedback can prolong this phase.* Regression Testing: When changes or updates are made to the software during development or maintenance, regression testing is necessary to ensure that existing functionalities are not adversely affected.This can add significant time.