Having a longer discussion (in Norwegian) over in #clojure-norway about why we chose Postgres over Datomic, one thing that comes to mind is that since I work in a SaaS company, multi tenancy is very important. Searching for Postgres and multi tenancy, https://dev.to/lbelkind/strategies-for-using-postgresql-as-a-database-for-multi-tenant-services-4abd is one of the first hits. Doing the same search for Datomic, I’d argue, gives no clear answers. So, for me, a clear discussion about how to go about multi tenancy and the trade offs for the various approaches would have been very valuable at the time when we made our choice