AWS
Some useful links to explain the concepts of AWS
Official AWS Documentation
Concepts
Configuration
https://serverfault.com/questions/778426/aws-ec2-describe-instances-filtering-by-multiple-ec2-tags
https://serverfault.com/questions/560337/search-ec2-instance-by-its-name-from-aws-command-line-tool
https://www.onica.com/blog/using-aws-cli-to-find-untagged-instances/
https://stackoverflow.com/questions/24938971/list-public-ip-addresses-of-ec2-instances