Language Server for YAML Files

- The **YAML Language Server** is an open-source tool that provides code assistance (autocomplete, validation, formatting, hover info) for YAML files in code editors. It implements the **Language Server Protocol (LSP)**, a Microsoft-developed standard that separates editor features into a server process, so any LSP-compatible editor (VS Code, Neovim, Emacs, etc.) can get the same YAML support. - Maintained by **Red Hat** (the enterprise open-source software company behind RHEL and Fedora), this server is the engine behind Red Hat's popular VS Code YAML extension, which has over 10 million installs. It supports features like schema validation (checking YAML against JSON/YAML schemas like Kubernetes manifests), auto-completion, and diagnostics. - **Why it matters**: YAML is widely used in modern DevOps and cloud-native tooling (Kubernetes configs, Docker Compose, CI/CD pipelines, Ansible). A reliable language server catches syntax errors and enforces correct structure, which is critical in production systems where a mis-indented YAML file can cause deployments to fail.