Infrastructure Automation is the use of technology to reduce or eliminate human intervention in managing IT infrastructure. It involves automating tasks such as provisioning, configuration, deployment, and monitoring of servers, networks, and other infrastructure components. Infrastructure automation tools like Terraform, Ansible, and Chef enable the definition and enforcement of desired states through code, ensuring consistency and repeatability across environments. By automating infrastructure management, organizations can achieve greater efficiency, scalability, and agility, while reducing the risk of human errors and operational costs.