kaestnerr posted on March 04, 2010 19:12
http://www.computerworld.com/s/article/9162542/Cloud_vs._in_house_Where_to_run_that_app_?source=CTWNLE_nlt_entsoft_2010-03-01
This provides a good explanation of public, internal and external private clouds, along with considerations for determining whether and where to host applications. This is a great addendum to CoSN's
EdTechNext report on Cloud Computing.