[mabbo]

I can't speak for the whole company, but I've done 5 peaks (holiday seasons) as an SDE in the Warehouse/Delivery orgs.

The key to remember about Amazon DevOps is that Developers are also DevOps. My team would usually share a dedicated DevOps team with 3 to 6 other teams- usually rotating front-line on-call duty between 2 or 3 people in the US and 2-3 in India. That DevOps person has the job of: what is the problem? Do my teams own this problem (if not, redirect to the right place)? Do I know how to immediately fix this? If not, for which of my teams do I page the on-call SDE?"

When you have a great DevOps team, SDE oncall duty is a walk in the park. But DevOps people take time to become great- and many of them are also applying for transfers to SDE roles.

Overall, each org decides how on-call/DevOps is. If time and effort and spent investing in stable software, it's easy. If other priorities get in the way, things can get bad.