The Sims Studio

The Sims Studio was a subsidiary of Electronic Arts located primarily at EA's Redwood City campus. It took over development of The Sims series from Maxis (which allowed Maxis to devote its resources to developing Spore). The Sims Studio has developed all games in The Sims series since The Sims 2: Bon Voyage, including The Sims 3 and all of its expansion and stuff packs. Despite The Sims development leaving Maxis, many Maxis developers remained with The Sims Division/The Sims Studio to continue developing the series.

Source: IGDB