I know that VPC peering[0] is possible across separate AWS accounts, what I don't know is that:
1. Whether or not my /24 block is "compatible" with VPC peering or not
2. How to prove to Bob that I'm not potentially MitMing him (assign my /24 block to VPC1, peer with Bob using VPC2, and MitM between VPC1 and VPC2 since they're both under my control). Would creating an IAM user with read-only VPC permissions work for this?
AWS is just an example. I would be happy to do this at any major provider (AWS and GCP are the two I know that allows bring-your-own-ip).
[0] https://docs.aws.amazon.com/vpc/latest/peering/what-is-vpc-p...