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When Polygon CDK rollups move to external Data Availability (DA), a few fundamental things change:
First, cost and scalability improve. Instead of posting all transaction data to Ethereum, Polygon rollups can publish data to specialized DA layers. This greatly reduces the cost and enables the rollup to process a higher throughput without congestion.
Second, architecture becomes more modular. Polygon is designed to be plug-and-play, so you can choose the DA layer that fits your needs. Try Ethereum for maximum security or an external DA (eg., Avail or Celestia) for performance and flexibility.
Third, security assumptions shift slightly. Although Polygon rollups currently use zk proofs for correctness, there is a new set of trust/availability concerns with external DA. A trust/availability assessment is required for storage/verification/restore of data.
Finally, developer control increases. With external DA, Polygon CDK rollups can fine-tune trade-offs between cost, speed, and decentralization. It’s something shared chains can’t easily offer.
In short, moving to external DA helps Polygon scale more efficiently, but it also puts more responsibility in the hands of builders to choose the right infrastructure setup.
First, cost and scalability improve. Instead of posting all transaction data to Ethereum, Polygon rollups can publish data to specialized DA layers. This greatly reduces the cost and enables the rollup to process a higher throughput without congestion.
Second, architecture becomes more modular. Polygon is designed to be plug-and-play, so you can choose the DA layer that fits your needs. Try Ethereum for maximum security or an external DA (eg., Avail or Celestia) for performance and flexibility.
Third, security assumptions shift slightly. Although Polygon rollups currently use zk proofs for correctness, there is a new set of trust/availability concerns with external DA. A trust/availability assessment is required for storage/verification/restore of data.
Finally, developer control increases. With external DA, Polygon CDK rollups can fine-tune trade-offs between cost, speed, and decentralization. It’s something shared chains can’t easily offer.
In short, moving to external DA helps Polygon scale more efficiently, but it also puts more responsibility in the hands of builders to choose the right infrastructure setup.