[zmmmmm]

> so you wind up buying several redundant copies of your system

This is one of those gotcha's that company's hit. They see the public pricing page and think "wow that is much cheaper than one my internal IT department charges for X", and then when they go to actually implement they find that "best practice" says they basically have to more than double or even triple the cost to get a reliable system (more because not only do you have to duplicate all the infrastructure into a second AZ, you are getting charged for the replication traffic between them).

[jann]

But in all fairness, if you actually implement that ”best practice” HA infrastructure, you will also be miles ahead of almost all internal IT departments.