3 insights from Near’s workshop on data availability from ETH Infra Day

Data availability is data that is stored on a network is accessible and retrievable by all network participants.

🚗The main challenge is throughput. If you do it with a lot of participants in a decentralized manner, you run into the problem that not everybody will be able to download all the data.

🧮Data availability is important for rollups. it allows them to trustlessly verify the correctness of computations performed off-chain

💰Using DA is cheaper. For example, Near's data availability layer is 1000x cheaper than posting data directly to Ethereum.