What is Windows Live?

Windows Live base sets are totally 18.

Most interesting services are Live Search, Office Live, Windows Live ID.
1. Live Search? Updated version of MSN Search
2. Office Live? Office Live has nothing to do with pushing Microsoft Office productivity suite
    to the Web. Allow users to host their own domain using Microsoft's hosting servers and 
    provide them email services, Web design tools, Live version of Sharepoint creation tools
    and templates.
3. Windows Live ID? Which will replace Passport and includes an updated UI and a sign-in
    assistant. Even more importantly, Live ID will be accessible as Microsoft-style Web
    Service, so developers of third-party Web sites can use it.

[Summary of InfoWorld, By Oliver Rist July 13, 2006]