Video 2 of 5 in the cloud models series. This video introduces 5 architectural models including: On Premise, ASP, IaaS, PaaS, and SaaS. It looks at their design and then the impact to corporations over six aspects of Foundation, Platform, Global Scale, Resources, Building Blocks, and Development. The aspects are weighed against competing factors of: Service vs. Ownership; SLA vs. Control; Dynamic vs. Fixed Licensing; Variable Expense vs. Fixed Capital; Speed to Market vs. Learning Curve.