It is worth noting that Citus was acquired by Microsoft a few years ago (not a secret, but may not be obvious to everyone), and they have since shifted heavily towards the Azure side of the world.

Back when it happened we tried to buy their product and they were not sure if the Citus standalone product was even going to exist, and they refused to demo it even. Odd timing possibly, but it's a data point.

On the positive side of things, the shard rebalancing was not open source back then iirc, which made the open source version pretty useless. Now it seems to be open source: https://www.citusdata.com/product/comparison -- pretty cool.

I'd still be careful to bank on it as a Citus only customer or open source user.