Ansible is an SSH-based orchestration and configuration management tool based on the push principle: Desired states, for example configurations of operating systems, are pushed from a control node to a target node. Ansible is very lightweight because it runs without a client. This makes it well suited for the control and configuration of infrastructure components such as
load balancers, firewalls, and API-controlled systems in general.
This is one of the reasons why Ansible has developed into a highly demanded solution in recent years. This was certainly fuelled by the purchase by Red Hat in 2015 and the partnership between Ansible and network solution providers such as Cisco, BigIP, PaloAlto, etc.
A popular use case for Ansible are automated deployments that are triggered via a CI/CD pipeline.