The activity feed displayed at the Home tab and on each Project overview page are the best way to see, at a glance, what has been happening on projects. The activity feed shows all events from projects, including actions performed by internal users and/or vendors.
The activity feed also shows comments posted to tasks, which provides a much more contextual information about the progress of projects, helping users collaborate and ensure tasks are completed before their deadline.
At the Home tab, the activity feed shows all events, comments and actions performed on tasks and projects followed by the user viewing the feed.
At the Project Overview page, the activity feed shows all the activity (events, comments to tasks) performed on the particular project being displayed.