How to upgrade to Standard usage model?
Hello! I'm currently on a Pro Plan and would like to upgrade to the Standard usage model for my workers/pages functions.

- What is the easiest way to do that?
- Are there any additional costs than the $5 +$0.30 per additional million?
- Are there any additional agreements when signing up for the Standard usage model?
- What is best practice for preventing too many requests to a pages function? Rate limting? CPU limits?