Extra 21: DynamoDB
Amazon DynamoDB powers multiple high-traffic Amazon properties and systems including Alexa, the Amazon.com sites, and all Amazon fulfillment centers. Over the course of the 66-hour Prime Day, these sources made 16.4 trillion calls to the DynamoDB API, peaking at 80.1 million requests per second.
On the block storage side, Amazon Elastic Block Store (EBS) added 241 petabytes of storage in preparation for Prime Day; the resulting fleet handled 6.2 trillion requests per day and transferred 563 petabytes per day.