I will give you a very simple answer its very easy to trick AWS people in DevOPs front , AWS codestar , code deploy is not matured and harldly any one is using it . you pick up one example form Github, https://github.com/aws-samples/aws-lex-web-ui for reference. Configure it , it is basically deploying a code from github using aws devops services is a S3 bucet which is hosting a lex chatbot. You dont need to know the lex chat bot part you just know how DevOps services are working, open evert part in this implementaition and explain this as your real time experience.

If you need any help ping me …its free ,