A project manager is coordinating the launch of a new IT service. In the schedule, the task "Activate new service" must begin before the task "Deactivate old service" can be completed. Which task dependency type best represents the relationship between these two tasks?
The Start-to-Finish (SF) dependency means that the successor task cannot finish until the predecessor task has started. In this scenario, "Deactivate old service" (successor) cannot be completed until "Activate new service" (predecessor) has begun, preventing service interruption.
Other dependency types describe different logic:
Finish-to-Start (FS): the successor cannot start until the predecessor finishes.
Finish-to-Finish (FF): the successor cannot finish until the predecessor finishes; they may or may not finish at the same moment.
Start-to-Start (SS): the successor cannot start until the predecessor starts; they may or may not start simultaneously.
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Can you explain other examples of a Start-to-Finish dependency?
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What are the key differences between Start-to-Finish and Finish-to-Start dependencies?
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Why is the Start-to-Finish dependency important for avoiding service interruptions?