Is SaltStack free?
Salt Open Source is free. VMware (which acquired SaltStack) offers enterprise versions with additional features and support.
What is SaltStack?
SaltStack (Salt) is a Python-based configuration management and orchestration tool. It's known for speed at scale, using a master-minion architecture.
SaltStack vs Ansible?
Salt is faster at scale due to its persistent minion connections. Ansible is simpler and agentless. Ansible has won the popularity contest, but Salt is powerful for large infrastructures.