There are currently three types of managed load balancers offered by AWS. Application Load Balancer: This load balancer operates at Layer 7 of the OSI model. It can be used to load-balance HTTP and HTTPS applications and can invoke Lambda functions, among several other features. Network Load Balancer: Used for extreme performance, this load balancer operates at Layer 4 of the OSI model. It can, therefore, load-balance any kind of TCP traffic and can handle large amounts of requests with low latency. Classic Load Balancer: This load balancer operates at Layer 4 or Layer 7 of the OSI model. I

AWS CodeCommit is essentially a managed service—i.e. Amazon manages and scales it behind the scenes for you, just like S3—for Git-based source control. AWS CodeBuild is used to build, test, and generate artifacts—files that are generated from successful build steps—for deployment. This, too, is a managed service, doing provisioning and scaling automatically. AWS CodeDeploy automates application deployments to several types of compute resources such as EC2 instances or ECS clusters. AWS CodePipeline is a continuous delivery service that allows automating and integrating build, test, and depl

You should delete only the user accounts from the developers, and keep the IAM group. It is possible that, in the future, you will want to hire more DevOps freelancers to change your infrastructure. Keeping the IAM group will mean you kept the underlying set of policies, and therefore, future users can reuse those policies.