This kind of savings should always be stated as "in comparison to." So like solution X is a 50% savings versus solution Y. Because there is always a free option, which often involves doing nothing. "Savings" is a weird concept in general. Sounds good in a commercial, but rarely means anything.
The new thing with Microsoft Azure is SiteCore, that is the new trend and people are already on that. Not sure but we might want to discuss that on ML one of this days. @scottalanmiller