The Microsoft Access 2010 Runtime enables you to distribute Access 2010 applications to users who do not have the full version of Access 2010 installed on their computers.
Microsoft Access 2010 provides a rich platform for developing database management solutions with easy-to-use customization tools. If no end-user customization is required (including report modifications), you can choose to distribute those Access 2010 solutions so that they run without requiring a full installation of Access 2010 . To do so, you must package and distribute your application with the Access 2010 Runtime.
The Access 2010 Runtime is similar to previous runtimes in that all design-related UI is either removed or disabled.
You do not need to buy any special product in order to redistribute the Access 2010 Runtime. You can freely redistribute it or point users to this download.
Courtesy : Microsoft Downloads Center