Terraform

Terraform is an open source software solution for declarative infrastructure management. It allows you to express and manage the desired state of your infrastructure with code. It has gained initial popularity as a framework to automate public cloud infrastructure but now supports a variety of on-premises and public cloud resources, platforms, services—almost anything that has an API.

One of the key distinctions of Terraform is the way it manages state. Once it creates a remote resource initially, it saves the resulting state in a file and relies on that state to be there for its next runs. As you update and develop your infrastructure code, the state file enables Terraform to manage the entire life cycle of a remote resource, calculating the precise sequence of API calls to transition between states. This ability to manage state and the declarative configuration language and the agentless, API-first architecture allowed Terraform to become deeply entrenched in...