Office 365 provides support for MS Access 2010 databases with two service plans for midsize business and the enterprise. Plans E3 and E4 are the top two tiers of SharePoint Online service capability. The two plans differ in one area – E4 offers voice capabilities with on premise Lync Server to complement or replace existing PBX services.
Back to Access Services, I came across a MSDN lab that will walk you through publishing a MS Access 2010 database to SharePoint Online. If you are new to SharePoint Online and looking for a way to leverage your Access databases, give this lab a try.
With the release of Office 365, businesses can choose from either on-premise SharePoint or hosted SharePoint Online for even greater flexibility in using SharePoint to share Access databases across multiple users.