Much like the Facebook Web Part, the Twitter Embedded Timeline Web Part enables you to display a feed of recent activity from a Twitter account.
Feed web parts like this were popular for many years, but due to functional glitches as well as evolving design and UX trends, we have decided to phase out feed web parts. To replace feed web parts, we have created a new Social Media Web Part that allows you to display linked icons to up to four social accounts in a single, simple panel.
We encourage you to replace your existing Twitter and Facebook feed web parts with the new Social Media Web Part.
See more info about the switch from feeds to the new web part on the Tips & Best Practices page.