This document provides an overview of AT&T's social media strategy across various platforms including Facebook, Twitter, YouTube, Google+, Instagram, Tumblr, Foursquare, and Pinterest. For each platform, it outlines their purpose, AT&T's purpose on the channel, ultimate metric of success, business objectives, target audience, recommended cadence of posts, voice and tone guidelines, and appropriate content types. The document emphasizes testing different content topics, measuring performance, and focusing content where it receives the best engagement.