Some of the old software before 2010 may not be able to install/run normally on x64 or Windows 10 systems. Be aware of it before purchasing it.
Microsoft Commerce Server is a Microsoft product for building e-commerce systems using Microsoft .NET technology.
Initially released in 2000, Commerce Server replaced Microsoft Site Server, expanding on the functionality and establishing a focus on e-commerce functionality (rather than concerning itself with document management or content metadata). It helped to create an e-commerce solution or web site with high-performance, familiar tools designed to simplify setup, management, and administration tasks.