Google entered the enterprise market in February 2002 with the launch of its Google Search Appliance, targeted toward providing search technology to larger organizations.Providing search for a smaller document repository, Google launched the Mini in 2005.

Late in 2006, Google began to sell Custom Search Business Edition, providing customers with an advertising-free window into Google.com's index. In 2008, Google re-branded its next version of Custom Search Business Edition as Google Site Search.

In 2007, Google launched Google Apps Premier Edition, a version of Google Apps targeted primarily at the business user. It includes such extras as more disk space for e-mail, API access, and premium support, for a price of $50 per user per year. A large implementation of Google Apps with 38,000 users is at Lakehead University in Thunder Bay, Ontario, Canada.

Also in 2007, Google acquired Postini and continued to sell the acquired technology as Google Security Services