There is a general belief among developers that session state maintenance is always against one
domain / site. And therefore one can not maintain session state across different domains. Usually there is
no such requirement to maintain session state across different domains. But of late due to increase in the
scope of web based applications developers feel the need to share the session state with other domains.
The other domain may be a sister concern of the same company, or may be the B2B partner. So the question
arises how one can share the session variables across other domains easily and safely.