What makes some open source updates so difficult?

Many organizations adopt open source software because they see it as a cheaper alternative to proprietary development. Maintaining it, however, still requires engineering effort, according to Google’s case study, “How much does it cost to maintain a copy of an open source software package (at Google)?” Study suggests that most updates to its internal copies of open source packages should take four engineering hours or less. More demanding updates can require days or months of … More → The post W