At Springsource’s winter getaway this week, Forrester Research vice president John Rymer coined a clever new term to make the open source argument.

Lean software.

Lean as opposed to bloated. Pieces as opposed to an integrated whole.

Why lean instead of just open source? Because Microsoft, through .Net, is also pushing a lean cuisine. Lean is the way Microsoft will push rivals like Oracle, IBM, and SAP out of the way, Rymer said.

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