I am working on AWS services and worked on around 15 services of aws and recently completed disaster recovery in AWS where we can recover all things in just 6 hrs. Below services on which i am working - IAM Dynamodb  Redshift  RDS  Cognito  Kinesis  Lambda - Node Js S3  Sqs  Sns  Cloudwatch  Cloudfront  Codecommit  Codebuild  Codepipeline  Data Pipeline  Cloudformation