# What is a Sync Wave in Argo CD?

Argo CD, Hard (Expert), Concepts. https://k8wiz.com/uquiz/what-is-a-sync-wave-in-argo-cd

- A. A visualization of sync history over time
- B. A way to control the order in which resources are applied during a sync operation
- C. A type of sync that applies changes in waves of increasing impact
- D. A sync operation that affects multiple applications at once

**Answer:** A way to control the order in which resources are applied during a sync operation

**Explanation:** Sync Waves in Argo CD provide a way to control the order in which resources are applied during a sync operation. By annotating resources with 'argocd.argoproj.io/sync-wave', you can specify the order of application, with lower numbered waves being applied first.