Describe your approach to managing infrastructure as code (IaC) using tools like Terraform or CloudFormation. What are the best practices you follow to ensure scalability and maintainability?

``` A structured pipeline for implementing IaC should include modular designs to promote reusability, version control for tracking changes, and thorough documentation outlining the infrastructure workflows. Additionally, implementing testing for the infrastructure code before deployment can catch potential errors early. Monitoring and updating the IaC regularly ensures it adapts with the growing infrastructure needs. ```