How do heists work in gta online?

The Wikipedia entry for Grand Theft Auto Online gives an overview of the game’s development, release dates, platforms, and general multiplayer features. It notes that the game is the online component of Grand Theft Auto V and that up to 30 players can explore the open world of San Andreas, including Los Santos. However, the article does not mention heists, their mechanics, or any related gameplay elements. Users seeking details on heist gameplay should consult additional sources that cover the mission system and cooperative play in GTA Online.