Michael DeHaan, who earlier wrote the Cobbler provisioning tool, released Ansible in 2012 as a simpler alternative to Puppet and Chef. It needs no agent on the managed hosts: tasks are pushed over SSH and described in readable YAML playbooks. Red Hat bought the company behind it in 2015 and sells the Ansible Automation Platform.
Since 2.10 the project is split in two. ansible-core is the engine, and the community ansible package bundles hundreds of collections of modules. ansible-core ships about twice a year, and each version is supported for roughly 18 months. The table on this page tracks ansible-core.
