AWS is becoming first choice of IT industry in the cloud context. AWS offers reliable, scalable, and inexpensive cloud computing services to all tier companies. AWS provides high availablity & reliable services like
1.EC2 instance to put your application online.
2.Keys to access instance.
3.Security Groups to provide kind of web firewall to in & out traffic.
4.ELB to manage the load or traffic over associated instances
5.Autoscaling to provide HA for your web apps.
6.RDS for Database services.
7.VPC for networking.
8.IAM for user management, user authorization to use/access specific aws resources.
9.NoSQL Database.
10.Cloudformation.

To provision, manage or model AWS services, AWS provides the GUI & CLI. To automate the provising or modelling process of AWS services, we are using Ansible. We also use Terraform, but we can't do administrative services with Terraform. Please check following URL of AWS Ansible repository...
https://github.com/jitendra-singh01/automate-aws-services-terraform
In this repository, you will the ansbile playbook scripts/templates and ansible roles based orchestration to manage AWS compute, VPC, IAM etc...