As of September 2, 2016, there are roughly 100 developers in Team 4, with five disciplines: Audio, Art, Engineering, Production, and Design. There are also two full-time Business Operations people, an esports director, a dedicated Quality Assurance team, and a dedicated Community team.
In the summer of 2013, a small core group started working on a new idea, which would become Overwatch. The size of the team fluctuated throughout the development of Overwatch, ranging from about 40 developers to 75, the number they had at the launch of the beta. Around launch, the audio team was brought on full-time, as well as an automation team, who kept the beta stable.
In February 2019, after a round of layoffs at Activision Blizzard, it was announced that the team would be expanded. In late 2020, Team 4 was further expanded in size, as it continued to work on Overwatch 2.
- Tracer's T-Racer skin has "Team 4" written on her pulse pistols. This may be a reference to the team.
- 2016-09-02, Jeff Kaplan talks about Team 4, Overwatch Forums.
- 2014-10-04, The Three Lives Of Blizzard Entertainment, Polygon.
- 2014-09-23, Blizzard cancels its next-gen MMO Titan after seven years, Polygon.
- 2015-05-27, BlizzCon 2014 – Overwatch Origins Panel Transcript. Blizzplanet, retrieved on 2015-05-31
- 2019-02-12, Activision Blizzard has record profits, so it’s cutting 8% of its staff. Blizzard Watch, accessed on 2019-02-13
- 2020-12-17, Developer Update | Kanezaka | Overwatch. YouTube, accessed on 2021-01-27