So many people in this discussion take sides. The only thing I see, is divergence. APIs will now evolve separately, and compatibility will break soon. I think this competition and diversification will be good for innovation in search. But it’s also going to be confusing for a while. If you use Elasticsearch in Amazon, you better decide very quickly whether you want to hitch your wagon to the OpenSearch future. Migrating is going to be a pain in a year or two.