Ansible is an open-source automation tool that simplifies configuration management, orchestration, application deployments, and cloud provisioning while ensuring security and compliance. Loops in Ansible are sets of instructions that automate repeated tasks, making it easier to perform the same action multiple times without manual repetition. They can be used for installing multiple packages, creating numerous users, or modifying a set of files. Using loops reduces the possibility of human errors and provides clear visibility into operations, improving troubleshooting and accountability. Loops in Ansible can iterate over lists and dictionaries, perform nested loops, use conditional statements, and utilize loop controls for customization.