The minute you start looking outside ExpressionEngine for certain functionality, e.g. an independent forum module, a standalone shopping cart or (worst case) an existing membership environment, you also see the need for a single signon mechanism. When we say we want to “integrate” EE with other things, I get the feeling it’s often only the extra logins we want to avoid.
Are there any EE sites out there that already have been integrated into a single sign-on solution? How did you do it, and how difficult was it?
Are there any standards or products in the works that you believe will help you integrate environments with more ease in the future?
What do you think of OpenID? Is OpenID support an “obvious” feature request for EE already now, or should we wait to see how the market develops?