AWS CloudFormation is a service that helps you model and set up your Amazon Web Services resources so you can spend less time managing those resources and more time focusing on your applications that run in AWS. You create a template that describes all the AWS resources that you want, and CloudFormation takes care of provisioning and configuring those resources for you.
OpenTofu is an open-source fork of Terraform that was created in response to HashiCorp's license change from MPL 2.0 to BSL 1.1. It maintains full compatibility with Terraform while being developed under the Mozilla Public License 2.0.
Salt is an open-source configuration management and remote execution tool that enables you to manage and automate the configuration of servers and network devices. While primarily a configuration management tool, Salt can also be used for Infrastructure as Code (IaC) through its cloud provisioning capabilities.
Terraform is an open-source Infrastructure as Code (IaC) tool created by HashiCorp that enables you to safely and predictably create, change, and improve infrastructure using a declarative configuration language.