Part 2 In part 1 on the search for a cost-effective dev environment we looked at the VPC setup. In this part we will look at the RDS setup. There are at least 3 ways to start and stop an RDS instance (in this example I used a simple RDS instance): Using Lambda Using SSM State Manager Using Eventbridge schedules Lambda The first option is to use a Lambda function to start and stop the RDS instance.

It is good practice to isolate your valuable data from the evil internet. The absolute basis is to have a subnet without a route to either a NAT gateway or Internet Gateway. A misconfiguration eg an open Security Group will not lead to exposure of your data due to being an ‘un-routeable’ subnet. The local route still applies to this subnet, so other subnets can still communicate with this subnet.