The Ethereum Foundation (EF) is a non-profit organization dedicated to supporting Ethereum and related technologies.
The EF is not a company, or even a traditional non-profit. The Foundation does not control Ethereum, nor is it the only organization that funds critical development of Ethereum-related technologies. The Foundation is part of a large ecosystem of organizations, individuals, and companies that support Ethereum.
The mission of the EF is to do what is best for Ethereum’s long-term success. Allocate resources to critical projects, to be a valued voice within the Ethereum ecosystem, and to advocate for Ethereum to the outside world.