Blue and green

Drag a card, use the arrows, or tap two cards to swap them.

1. 1
   Send new production traffic to green; keep blue ready
2. 2
   Drain or stop remaining green requests before removal
3. 3
   Observe the higher error rate on green
4. 4
   Deploy green while blue serves production
5. 5
   Send new production traffic back to healthy blue
6. 6
   Test green without moving production traffic