Do we know that they saved money overall? I poked around the article but I couldn’t find anything.
From what I have read in the past, conversions like this did not save money. The reduced front end costs were offset by higher backend costs. Linux admins have higher salaries then windows admins. Front end staff needs to be retrained and have to spend more time with outside vendors who are on Microsoft Office. Etc.
I really hope that the conversion does save money and I think the open data formats add value. I just want to know how they measured the cost savings.