The issue is that the keys can be used to various extent to handle relational data (this re:Invent video shows this well: https://youtu.be/HaEPXoXVf2k?t=1363 ht

The issue is that the keys can be used to various extent to handle relational data (this re:Invent video shows this well: https://youtu.be/HaEPXoXVf2k?t=1363 https://youtu.be/HaEPXoXVf2k?t=1363). What people miss though is that in order to not shoot themselves in the foot, you have to have stable, known access patterns which meet the constraints of DynamoDB. Even the documentation of DynamoDB says so: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-general-nosql-design.html https://docs.aws.amazon.com/amazondynamodb/latest/developerg... This means that it's a good use case for shopping cart of Amazon since there's limited innovation possible there and it fits the bill nicely, but for a new application with relational data where the requirements change all the time - it's a terrible, terrible choice for which you will pay dearly.