What is Ansible, and what technologies is it built on?

An open-source automation tool for configuring and administering computers, written in Python, with automation described in YAML.

• Open source, maintained by Red Hat, with commercial products on top (historically Ansible Tower, today the Red Hat Ansible Automation Platform).
• Main functions: automation, file management and maintenance, configuration management.
• Technologies: Ansible itself is written in Python; the automation (playbooks, inventories, variables) is written in YAML.
• How you work with it: mostly from the Bash command line, with automation code written in any standard text editor. No special IDE or GUI is needed.

Official documentation: docs.ansible.com.

Go deeper:

• Learning Ansible basics (Red Hat) — primer on agentless design, modules and YAML playbooks, and how the enterprise platform builds on them.
• What is Ansible? (IBM Technology) — short lightboard introduction.
• Ansible (software) (Wikipedia) — history (2012, Red Hat acquisition), architecture and design goals.