How do gta online heists differ from story mode missions?

The Wikipedia excerpt supplied describes Grand Theft Auto Online as a multiplayer component of Grand Theft Auto V, outlining its release dates, platform availability, and general gameplay features such as the open world of San Andreas and player control over a customisable character. It does not contain any details regarding heists, story mode missions, or how they might differ. Consequently, based solely on the verified evidence given, it is not possible to explain the distinctions between GTA Online heists and story mode missions.