StewBeans writes: Typically it's developers — not senior IT executives — who have been pushing their IT departments to adopt open source software, but the tide is beginning to turn. The Weather Company's CIO, Bryson Koehler, says if IT decision makers are not bringing up open source solutions to business problems, they will start to lose credibility as leaders. He references recent moves from major players like Apple, Google and IBM as evidence of open source going mainstream. As it continues to increase in importance, "companies that are still shying away from open are clearly being led by people who are probably not fully informed about the decisions they're making." Koehler hypothesizes that as these leaders are replaced by more informed decision makers, "expect to see a continued rise in the use of open source technology solutions, especially in modularized ways so that it's easier to replace one set of libraries or components in your stack with a new set as open source projects ebb and flow throughout their life cycles."