"It varies, depending on your needs. I have a large number of sites in a multisite setup, but I also have sites in their own installations. Much of this depends on factors like who does the development and maintenance. Do you have specific questions?"
"OU Campus Developers: There's still time to build and submit your working gadgets to our 2014 Gadget Challenge for a chance to win free registration + travel reimbursement to OUTC15! Learn more about building gadgets in OU Campus by…"
"We just finished our institution-wide, procurement, redesign, development, migration and launch our our university's public web presence with T4 Site Manager. I've been intimately involved in the entire process.