SharePoint 2013 makes it easier to control multiple project tasks. Rather than going to each project site to review and edit your tasks, you manage them in one location. The My Site page, for instance, has a link in the left-side navigation menu to "Tasks;" you click it to load the My Tasks screen, which aggregates your tasks across all of your groups. Presented in a timeline, the tasks are searchable and grouped by project locations. You can sync tasks to Outlook, too.