GitOps is an operational model that applies the workflows and tooling of software development—version control, code review, pull requests, and automated delivery—to infrastructure and application deployment. Rather than engineers running imperative commands to update a cluster, the desired state of every system is declared in a Git repository, and a software agent continuously reconciles the live environment to match that declared state. The term was coined by Weaveworks in 2017, but the underlying principles formalise practices that elite engineering teams had already converged on independently.
The GitOps model is defined by four properties: declared, versioned, automated, and continuously reconciled. Each property addresses a specific failure mode of traditional operations: undocumented manual changes, unversioned configuration drift, slow manual deployment processes, and invisible divergence between intended and actual system state. Together they create an operations workflow where Git is the single source of truth and every system change is observable, auditable, and reversible.
Analogy🏏Cricket
Think of it like cricket: Imagine the BCCI's team management system for an international tour with matches in three different countries simultaneously. Rather than a coordinator manually managing each match day's logistics, the system reads the official tour schedule document and automatically dispatches the right squad, equipment, and support staff to each venue. When the tour schedule changes—a match is rescheduled, a squad member is replaced—the system detects the change and updates the arrangements automatically. Just as the tour management system uses the official document as the source of truth and orchestrates multiple concurrent deployments to multiple venues, ArgoCD uses the Git repository as the source of truth and orchestrates multiple concurrent Application syncs to multiple clusters. Just as the system provides a dashboard showing which venues are 'ready', 'delayed', or 'degraded', ArgoCD provides a dashboard showing which Applications are Synced, OutOfSync, or Degraded. This reveals why ArgoCD is valued at scale: managing dozens of applications across multiple clusters manually is operationally equivalent to coordinating an international cricket tour by phone.
🏏 Showing the Cricket analogy — a Cricket version isn’t available for this concept yet.