I have a problem and I expect that someone help me.
I'm working with AWS and I have 2 VPC. The default VPC an another VPC created by me. Each VPC has 3 subnets in differents AZ (eu-west-1a, eu-west-1b and eu-west-1c).
I detected that, in default VPC, I can create/run a EC2 instance without specify which subnet. But, with non-default VPC i have to specify which subnet I will use.
In non-default VPC, is it possible create a EC2 without specify a subnet?
I'm interested create a CloudFormation template that create Ec2 instance in differents subnets for redundancy.