Sandboxed solutions planning (SharePoint Server 2010)
Applies to: SharePoint Foundation 2010, SharePoint Server 2010
The Sandbox Solution framework provides a mechanism for executing user-provided code outside of the IIS worker process. The Sandbox Solution framework should not be used as a mechanism for enforcing security boundaries when executing user code. Sandbox Solutions are not supported as a security boundary with user code, especially code of unknown origin. We advise against executing Sandbox Solutions of unknown origins.
Sandboxed solutions restrict access to network and local resources to provide stability. You can use sandboxed solutions for load balancing solutions, for solutions that have not been fully tested, and for deploying user solutions in a hosted environment. Sandboxed solutions run in a separate worker thread so that they cannot access resources that belong to other solutions, and they have limited access to local and network resources.