See https://spot.io/resources/kubernetes-autoscaling/5-kubernetes-deployment-strategies-roll-out-like-the-pros/

In this step we look at deploying different application images

• red
• green
• blue (latest)

Strategies supported by kubernetes out of the box:

• rolling deployment (replaces pods running the older version with the new version one-by-one)
• recreate deployment (terminates all pods and replaces them with the new version)

Requires customization or specialized tools

• ramped slow rollout
• best-effort controlled rollout
• blue/green deployment
• canary deployment
• shadow deployment
• A/B testing

Continue to Step 7 - Load Balancing

Or, back to Step 5 - Application Pods or Start