AWS Config

AWS Config is a really important and awesome service. It is fully managed by AWS and provides you with an inventory of your AWS resources. It also lets you audit the resource configuration history and notifies you of resource configuration changes. Over a period of time, as a cloud admin, you will fall in love with this service. To better understand it, let's say that there is a need for you to modify the instance type from m3.large to c4.large.

Once you modify the instance type, all the data related to the previous state of the instance is lost. And in case you need those configurational details of the instance before the modification event, you have no way to get that information. This is where AWS Config plays a vital role. You can record the configurational changes of the instance and other resources that are available on AWS. So, this service helps you to track down the changes made to your resources on AWS.