Box sizes: this system supported lots of different programming languages/framewoerks/pre-built OSS, and as a result, some parts ran nice and lean (python) other

Box sizes: this system supported lots of different programming languages/framewoerks/pre-built OSS, and as a result, some parts ran nice and lean (python) others chewed memory with reckless abandon (magento). Another factor was supplying enough network bandwidth to some hosts, hence larger sizes. Zones: most apps were built for 2 AZ's at the start; apps deemed "critical" and "doable" flipped to 3 near the election. Asgard: deployments had been tested with Asgard in East, but the rapid deploy in west actually used this approach. Thanks Netflix! Services: some which are critical but missed the chart are IAM, sns, cloudwatch (for autoscaling), and yes, a bit of cloudfront was used on images sent out on SES (transactional only!) emails. Thanks for the good questions!