As the world stands today, it makes sense to use Datomic if you are writing code on the JVM and are willing to pay for the database and associated support. In

As the world stands today, it makes sense to use Datomic if you are writing code on the JVM and are willing to pay for the database and associated support. In a hypothetical future world where the data model and query approaches have more widespread open source adoption it is competitive for a lot of the same use cases.