We are running a NGO, which has some 30+ centers. And each center will have its own page or site which will be 30 in all.
I want a solution where lists are visible depending upon which user from which center is logging in. Moreover, Webparts content is visible as per user permissions (something like fetch webpart data on user login). I also want details like Announcements, Calendars etc to also show up based on user.
Can someone give me an idea on how to go on this in such a way that homepage is not resource heavy?