If you are planning to launch a Cardano DApp, and we tell you to store your data "in a metadata layer sidechain, powered by semantic graph DB with an immutable ledger", you'd probably think that it sounds cool, but you'd have two reservations to go this route. First, that you may know nothing about it and second, that you'd think that there will be a lot of work involved.
But what if we tell you that all you'd need to do is to describe your data in a format of JSON schema, and then run code generator to build the class library where every entity already knows how to talk to the metadata layer? Plus, you'd have the same kind of library in Plutus, allowing you to persist the data required for Smart Contracts. This will cut your back-end development work by 50-70%. Now is it more likely that you'll jump onboard?
Stay tuned for updates, because this is precisely what we are working on and we have submitted a proposal for Catalyst Fund 6, to help us with funding. Please take a look and vote!