Full disclosure: I am a member of DynamoDB team at AWS, but my opinions here are mine only On the topic of DynamoDB use cases, here are some of DynamoDB users

Full disclosure: I am a member of DynamoDB team at AWS, but my opinions here are mine only On the topic of DynamoDB use cases, here are some of DynamoDB users describing their use cases: - DataXu: "How DataXu scaled its System to handle billions of events with DynamoDB" -- https://youtu.be/lDiI0JMf_yQ?t=765 https://youtu.be/lDiI0JMf_yQ?t=765 (from AWS re:Invent 2016) - Lyft: “Lyft Easily Scales Up its Ride Location Tracking System with Amazon DynamoDB” -- https://www.youtube.com/watch?v=WlTbaPXj-jc https://www.youtube.com/watch?v=WlTbaPXj-jc. The story "AWS Helps Fuel Lyft's Expansion" in InformationWeek mentions Lyft's use of DynamoDB as well: http://www.informationweek.com/cloud/infrastructure-as-a-service/aws-helps-fuel-lyfts-expansion-/d/d-id/1326660 http://www.informationweek.com/cloud/infrastructure-as-a-ser... - Under Armour implemented cross-region replication using DynamoDB: https://youtu.be/NtaTC2Fq7Wo?t=699 https://youtu.be/NtaTC2Fq7Wo?t=699 - Amazon.com: Amazon Marketplace shares their story of migration to DynamoDB and why they did it: https://www.youtube.com/watch?v=gllNauRR8GM https://www.youtube.com/watch?v=gllNauRR8GM Finally, DynamoDB was created because Amazon needed a highly reliable and scalable key/value database. As Werner Vogels said it in his blog post announcement of DynamoDB back in 2012 (http://www.allthingsdistributed.com/2012/01/amazon-dynamodb.html http://www.allthingsdistributed.com/2012/01/amazon-dynamodb....): "This non-relational, or NoSQL, database was targeted at use cases that were core to the Amazon ecommerce operation, such as the shopping cart and session service."