A chronological page format on Facebook, designed to incorporate all types of activity, applications, and information on one page.  Facebook Timeline launched and gradually rolled out in 2012.

Why Is Facebook Timeline Important?

Facebook Timeline houses all of a person or Page's content on one page, organized chronologically. Timeline offers a number of features for marketers, such as apps, larger photos, pinned posts, cover images and more.  Timeline allows users to browse through all of a Page's recently posted content and beyond, right back to the first day the Page was created. 

Facebook Timeline houses all of the content a person or Page has posted.