Ever notice how Layer2s used to hammer L1 calldata and drive gas fees through the roof for everyone? EIP-4844 completely changed the game.

Blob transactions are the key difference here. Instead of competing with regular transactions for L1 gas space, rollups now have their own dedicated fee market for temporary data. The impact? Massive. Posting rollup data costs plummet, throughput scales up, and the congestion problem basically vanishes.

Before EIP-4844 rolled out, L2s were essentially spamming L1 with transaction calldata, making it expensive for everybody. Now they post blobs—separate, cheaper, and isolated from the main gas market. It's exactly what Ethereum needed for serious scaling. The architecture shift is elegant: you get the security guarantees of L1 settlement without choking the whole network. Layer2 fees dropped dramatically as a result, and adoption accelerated.