Activision Blizzard, Inc. is an American video game holding company based in Santa Monica, California. Activision Blizzard currently includes three operating units: Activision, Blizzard Entertainment and King.

Founded in July 2008 through the merger of Activision, Inc. and Vivendi Games, the company owns and operates additional subsidiary studios, as part of Activision, including Infinity Ward, Treyarch, and Sledgehammer Games. Among major intellectual properties produced by Activision Blizzard are Call of Duty, Crash Bandicoot, Guitar Hero, Skylanders, Spyro, Tony Hawk’s, Diablo, Hearthstone, Heroes of the Storm, Overwatch, StarCraft, World of Warcraft, and Candy Crush Saga. Under Blizzard Entertainment, it invested in esports initiatives around several of its games, most notably Overwatch and Call of Duty. Activision Blizzard’s titles have broken a number of release records. As of March 2018, it was the largest game company in the Americas and Europe in terms of revenue and market capitalization.

The company has also been involved in multiple notable controversies, including allegations of infringed patents and unpaid royalties. In late July 2021, it was sued by the California Department of Fair Employment and Housing on allegations of sexual harassment and employee discrimination. The suit triggered an investigation by the U.S. Securities and Exchange Commission, multiple workplace walkouts, the resignation or dismissal of several employees, the loss of multiple company event sponsors, and hundreds of workplace harassment allegations.

Microsoft announced its intent to acquire Activision Blizzard for $68.7 billion on January 18, 2022. The acquisition was completed on October 13, 2023. Activision Blizzard is a subsidiary of Microsoft Gaming along with Xbox Game Studios and ZeniMax Media.

Reference: Wikipedia