Facebook App

Description

Facebook reached 3 billion monthly active users in 2023, making it the most widely used social network in the world by that measure. The number spans every inhabited continent and every demographic that owns a smartphone — high school students, grandparents, small business owners, news organizations, government agencies, community groups, and individuals using it as their primary way to stay in contact with people they know. No other consumer software product, with the exception of messaging applications, operates at that scale.

Meta Platforms, the parent company Mark Zuckerberg started with Facebook, launched the network out of Harvard in 2004 and opened it up for general registration in 2006. What started as a college directory, Facebook has become the defining consumer internet platform of the 2010s and, despite challenges from younger-skewing platforms including Instagram and TikTok — both owned by Meta and ByteDance respectively — retains a user base that no competitor has displaced in absolute size.

KEY FEATURES

News Feed and Reels

The News Feed shows content from friends, Pages, and Groups that a user follows, interspersed with algorithmic recommendations for Pages and accounts that they don’t follow. Meta’s feed ranking algorithm considers engagement signals — comments, shares, reactions — to surface content it thinks will generate interaction. Reels, short vertical videos modeled on TikTok’s format, appear throughout the feed and in a dedicated Reels tab. Facebook integrated Reels after Instagram’s successful adoption of the format, and Reels from both platforms cross-post across Meta’s apps.

Stories

Stories show photo and video content that vanish after 24 hours. A user’s active stories are displayed in a row at the top of the feed. Stories support text overlays, stickers, polls, music, and question prompts. Friends and followers see stories without the content appearing permanently in the user’s profile or feed timeline.

Groups

Groups are community spaces that are organized around shared interests, locations, or purposes. A Group can be public — discoverable and readable by anyone — or private, limiting membership and content visibility to approved members. Group administrators set rules, approve or reject requests to join the group, and moderate content. Groups serve as discussion forums, neighborhood communication channels, hobbyist communities, and event coordination spaces. Facebook’s algorithm actively promotes Group content as part of its emphasis on community-focused interaction.

Marketplace

Facebook Marketplace is a peer-to-peer buying and selling platform built into the app. Sellers list items with photos, descriptions, and prices. Buyers search listings by category, location radius and price range. Marketplace integrates with Messenger for direct negotiation between buyer and seller. Shipping options enable transactions between users in different locations, not just local pickup. Marketplace covers categories such as furniture, electronics, vehicles, clothing, and real estate rentals.

Messenger Integration

Messenger, Meta’s dedicated messaging app, integrates with Facebook in such a way that Facebook friends can message each other through either app. The Facebook app has a Messenger inbox that is available from the home screen. Group chats, voice calls, and video calls run through Messenger. Message requests from people outside the user’s friend list are placed in a separate filtered inbox.

Events

The Events feature enables users and Pages to create event listings with dates, times, locations, and descriptions. Attendees RSVP as Going, Interested, or Not Going, and the event page keeps track of the number of attendees. Event hosts post updates that can be seen by RSVPs. Facebook Events is a discovery tool for local public events in addition to private event coordination between groups of friends.

Pages for Businesses and Public Figures

Pages allow businesses, organizations, public figures, and brands to have a public presence on Facebook separate from personal profiles. Pages can post updates, run events, respond to messages, and advertise. Followers receive Page posts in their feeds. Page Insights offers analytics for Page administrators on reach, engagement, and follower demographics. Advertising from Pages is used to target specific audiences based on location, age, interests, and behavior using Meta’s advertising platform.

Watch

The Watch tab is an aggregation of video content from Pages a user follows as well as Facebook’s recommendations, including news segments, sports highlights, entertainment clips and creator-produced content. Live video broadcasts from Pages and personal profiles are shown in Watch during the broadcast and replay after the broadcast.

Privacy Controls

Privacy settings control who sees each post — Friends, Friends of Friends, Public or a custom list. Past posts can be retroactively restricted to Friends only using a bulk privacy tool. Profile visibility controls limit what non-friends can see when they view the profile. Activity log shows every action taken on the account — posts, reactions, comments, searches — organized chronologically for review.