IATA NDC is the latest “thing” but getting started is not obvious.
This project is a working NDC front-end posted on GitHub. It is based on Angular plugged into AirGateway for NDC API access.
Currently it can do NDC Air Shopping but eventually the objective is to complete a full end-to-end NDC booking web app.
It is published as open source as a quick start, download-and-run app for teams working on things like travel hackathons or NDC proof-of-concepts.