I love AWS Parameter Store
I really love AWS Parameter Store. It’s a services where you can save encrypted data such as keys and password. These encrypted values can be queried and downloaded into an EC2-instance and used. This could be things such as RDS DB passwords, private SSH keys etc. I actually used it for a private SSH key. I needed the server to run a ‘git pull’ at specific times in the day, and there was no webhook available, so I did it like that.
Having a simple repository where you can store important credentials is important. There are other products as well such a Hashicorp Vault etc.