Infrastructure as code (IaC) is a software engineering approach that allows the provisioning and management of infrastructure resources using code and automation1. It involves defining infrastructure configurations and provisioning them through code, rather than manually configuring and managing infrastructure resources2. One of the main reasons for using IaC is to capture the system configurations to track changes and remediate configuration drift3. Configuration drift is the phenomenon where the actual state of an infrastructure resourcedeviates from its desired state over time due to manual interventions, updates, patches, or other factors. Configuration drift can cause inconsistencies, errors, and security issues in the infrastructure environment. IaC helps to prevent and detect configuration drift by storing the infrastructure configuration code in a version control system and applying it consistently across all environments. IaC also enables the use of automated testing and validation tools to verify the compliance and functionality of the infrastructure resources. By using IaC, DevOps teams can ensure that the infrastructure is always in a known and reproducible state, and that any changes are documented and traceable. References: 1: https://technology.gov.capital/infrastructure-as-code-iac/ 2: https://aws.amazon.com/what-is/iac/ 3: https://learn.microsoft.com/en-us/devops/deliver/what-is-infrastructure-as-code : https://www.comptia.org/training/books/cloud-essentials-clo-002-study-guide, Chapter 5, page 179-180