Run your cloud contracts (or anything possible to incur liability) through a separate LLC so if there are billing issues you can just move on.
The structure should look like:
"My App LLC" has contract with "My Host LLC" for hosting services. "My Host LLC" provides those services via a cloud provider. If "My Host LLC" racks up a 2 million dollar bill with the cloud provider and goes out of business then I just move to "New Host LLC" and carry on.
It's not as if the patients of a Doctor who fails to pay his office rent would become liable.
The structure should look like:
"My App LLC" has contract with "My Host LLC" for hosting services. "My Host LLC" provides those services via a cloud provider. If "My Host LLC" racks up a 2 million dollar bill with the cloud provider and goes out of business then I just move to "New Host LLC" and carry on.
It's not as if the patients of a Doctor who fails to pay his office rent would become liable.
This is the entire purpose of LLCs.