Office Live will be available in three service levels. The first, Office Live Basics, includes a free (but advertiser-supported) Web site, domain name, and five email addresses. The second service level is called Microsoft Office Live Collaboration. It will charge a subscription fee and is a solution for small businesses that already have a Web site and domain but want to take advantage of the Office Live business applications and various intranet/extranet experiences. The third service level is a high-end offering called Office Live Essentials. This top-tier Office Live service includes the Web site, domain name, and email addresses and also offers more storage and a total of 50 email accounts, as well as the business applications and intranet/extranet offerings. Essentials customers can use the email accounts in unique ways; for example, accounts might be created for aliases for sales or support, and messages to those accounts will be automatically forward to specific people in the company.
I've written a preview of Office Live for the SuperSite for Windows, but I've been working with the beta code and will soon post a second preview that focuses on my hands-on experience with the services. Stay tuned.