Terraform is an open-source infrastructure as code (IaC) tool created by HashiCorp. It allows developers and operators to define and manage infrastructure resources using declarative configuration files. Terraform enables you to provision, manage, and update infrastructure components across various cloud providers and on-premises environments.

Key features and concepts of Terraform include:

  1. Infrastructure as Code (IaC): Terraform uses code to define infrastructure configurations, making it possible to version, collaborate, and automate infrastructure provisioning.
  2. Declarative Syntax: Terraform uses a declarative syntax to describe the desired state of infrastructure resources, allowing users to specify what resources should exist rather than the step-by-step process of creating them.
  3. Provider Support: Terraform supports multiple cloud providers (such as AWS, Azure, Google Cloud) and other infrastructure platforms (such as Docker, Kubernetes, and more).
  4. State Management: Terraform maintains a state file that keeps track of the actual infrastructure state compared to the desired state, allowing for updates and changes to be applied incrementally.
  5. Plan and Apply: Terraform provides a planning phase where it generates an execution plan showing what changes will be made, followed by an apply phase to make those changes.
  6. Resource Dependency Management: Terraform automatically manages resource dependencies, ensuring that resources are created in the correct order.
  7. Modularity and Reusability: Infrastructure code can be organized into reusable modules, which can be shared and used across different projects.
  8. Versioning and Collaboration: Terraform code can be managed using version control systems, enabling collaboration among teams and tracking changes over time.

Terraform's goal is to simplify and automate the provisioning and management of infrastructure, making it easier to maintain and evolve complex systems. It has gained popularity due to its flexibility, support for multiple cloud providers, and its ability to manage a wide range of resources and services.

Updated on 11 Aug, 2023
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