Canonical is the company that provides commercial support for Ubuntu and related services, such as Landscape.

Canonical Ltd.

Canonical Ltd. is a private company founded (and funded) by South African entrepreneur Mark Shuttleworth to market commercial support and related services for Ubuntu Linux and related projects. Canonical is registered in London and employs staff around the world. Its main offices are in London, its support office in Montreal, and its OEM team in Lexington, Massachusetts, USA and Taipei, Taiwan.

Excerpt taken from Wikipedia.
Canonical was founded in 2004.

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