Commerce Server was a software product for building multichannel e-commerce applications and systems using .NET Framework technology.

Previously known as Microsoft Commerce Server, it was at the end of the product lifecycle developed, sold, and supported by Sitecore for building multichannel e-commerce applications.

[2] The core software that formed the basis for the Commerce Server product line was developed by eShop and purchased by Microsoft in 1996.

[4] Ascentium then bought outright the Commerce Server business from Microsoft that same year.

[5] In 2012 Ascentium re-branded its company as SMITH and split off the Commerce Server product division into a wholly owned subsidiary known as commerceserver.net.