Group of tasks that can be reused in multiple workflows are called worklets. Worklets are similar to mapplets in Mapping Designer. As you know from the previous chapter, you use mapplets instead of multiple transformations; similarly, you can use worklets instead of multiple tasks. When you wish to reuse the functionality implemented using multiple tasks, a worklet is your answer. As reusing a reusable task itself is a rare occurrence, you do not frequently reuse the logic of individual tasks, which makes using a worklet a more rare occurrence in Informatica. Worklets can surely save your time, as you can reuse an existing functionality. Similar to workflows, worklets should also start with a Start task.