Salt Project (SaltStack)

Salt Project, widely known as SaltStack, is an open-source infrastructure automation and configuration management platform that provides event-driven automation, remote execution, and configuration management at massive scale. Originally created by Thomas Hatch in 2011, Salt was acquired by VMware in 2020 and is now part of Broadcom following the VMware acquisition, with the open-source community project hosted under the Salt Project umbrella. The platform uses a high-speed, zero-message-bus architecture based on ZeroMQ, enabling communication with tens of thousands of nodes (minions) from a single master with sub-second response times. Salt's core capabilities include remote execution of arbitrary commands across targeted node groups using compound targeting (grain, pillar, glob, regex, IP range), declarative configuration management via Salt States (SLS files) written in YAML with Jinja2 templating, and event-driven automation through the Salt Reactor system that can trigger actions based on system events. The latest releases include version 3006 LTS (Long Term Support) and version 3008 (Onedir) with bundled Python dependencies for simplified installation. Key features include Salt Grain system for node inventory and classification, Pillar for secure data delivery, Salt Mine for shared minion data, Salt SSH for agentless execution, and Salt Cloud for cloud instance provisioning across AWS, Azure, GCP, and OpenStack. Salt is used by organizations including LinkedIn, Netflix, IBM, Cisco, SAP, and NASA for infrastructure provisioning, compliance enforcement, security automation, and adaptive configuration management across hybrid environments. The project is available under the Apache 2.0 license.