I'll be one of the speakers at the meetup. In my talk, I will the audience to Gally - a searchandising solution built on top of Symfony, API Platform, and Elasticsearch. While the talk is focused on the e-commerce use case, you can also use Gally for non-e-commerce solutions, which makes the solution super flexible. You should not miss the talk if you wonder why I am a big Gally fan!
Looking forward to seeing you in Frankfurt! If you want to attend the meetup, sign up here.