Argo CD vs. Flux
A Practitioner's Guide to Choosing Your GitOps Platform

Nearly every GitOps evaluation comes down to two tools: Argo CD and Flux. Both are CNCF-Graduated and proven in production. These tools implement the same principles but differ in architecture, user experience, and scaling. These differences determine how your team operates GitOps day-to-day.

This 2026 edition compares each side-by-side across architecture, security, supply chain, and scalability, with current adoption data for each. A decision framework then maps both tools to your team's actual way of working.

Written by the original creators of Argo CD and Kargo, the guide also includes insights into the problem that arises once teams solve for deployment: promotion, or deciding when a change is ready to move to the next environment.