SharePoint boundaries and limits

There are many boundaries and limits that you will generally not run into, in the SharePoint world.  One such boundary that I ran into the other day is 500 content sources per Search Service App.  Being aware of these could help you plan architecture for your designs and systems correctly so that the need for adjusted architecture later on, is negated.

For 2010, start here:

SharePoint Server 2010 capacity management: Software boundaries and limits