Terraform modules are modular, reusable parts of Terraform that contain collections of resources specified in. tf files. They make infrastructure administration easier by enabling you to standardize, arrange, and reuse code for comparable settings across several projects or environments.
Principal Advantages:
Code Reusability: Modules prevent duplication, allowing you to develop infrastructure code only once and reuse it. For instance, you can develop a module for an AWS VPC and utilize it in various settings, such as development, testing, and production.
Standardization: Modules guarantee uniform infrastructure by enforcing best practices and consistent configurations across teams.
Simplified Maintenance: Changes to a module are automatically applied wherever the module is used, making updates easier to manage.
Improved Organization: You can increase readability and facilitate codebase maintenance by segmenting infrastructure into modules.
For instance, a module for building an S3 bucket may specify versioning, encryption, and bucket name options. This module allows you to quickly and easily deploy consistent S3 configurations across projects.
Modules simplify infrastructure administration by lowering complexity, encouraging DRY (Don't Repeat Yourself) principles, and enhancing scalability in Terraform settings.
