- Use billing methods which are less likely to be used by scammers (e.g. likely not credit card).
- Keep a steady balance.
- Have luck (sad but true).
Minimum spend and similar might help with customer service (if they can see your spend). But most problems start with automated services.
Don't switch cloud providers every half year because another one is slightly cheaper now (i.e. have longer running/existing accounts), might help.
But most important make sure that you don't get locked in by the could provider
Even a permanent ban from the could provider should just cause some, not to high, short term (mony) loss. This means:
- Do not ~use~ relay on cloud providers proprietary tec (sure use there management console, etc. but don't integrate it into your business to tightly).
- Have control over your DNS names so that you can map them to different IP addresses if needed.
- Make sure you can migrate to a different cloud provider in matters of hours/days/weeks (depending on what you use it for) at any time.
- Have backups outside of the could provider for all your stuff.
- don't get trapped by doing backups on a different service of the same provider (e.g. Amazon) ;=)
In the end how much this costs you depend a lot on what you do and how you do it. And yes deciding and not doing any continous shot term investments taking the risk of loading everything is fine, you just should make the decision conscious.