Microsoft SharePoint Online
Microsoft came out with the announcement that they would be having online services for exchange, sharepoint, dynamics and live meeting a fair bit ago, but in case you aren’t aware of it yet I highly recommend watching the demo available at:
Once the beta is complete this will have a HUGE impact upon the SharePoint world. Think of it as a subscription service that is provided which deals with the data center needs, most of the administration, and greatly reduces costs to businesses. Small businesses will especially gain a considerable advantage from these services so I am looking forward to how the adoption rate for online business service solutions increases over the next few years.