@timoze
Celestia is the modular blockchain powering unstoppable applications with full-stack customizability.
Rollups and L2s use Celestia as a network for publishing and making transaction data available for anyone to download. For them, Celestia provides high-throughput DA that can be verified easily with a light node.
And by making the blockchain stack modular, anyone can launch their own blockchain without needing a validator set.