Algorithm: meaning and how it works

An algorithm is the set of rules a platform uses to decide which content to show to whom.

Each feature (feed, reels, search, explore) has its own ranking. Watch time, shares and saves matter widely. Read the Instagram algorithm explained.

How it works in practice

Algorithms change often, but the principles are stable: show content people finish, enjoy and share, to those likely to care.

Example

Example: a reel that is watched to the end and shared in DMs gets a larger test audience next.