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Learn more about Polkadot & Kusama in our "Game of Thrones" breakdown.

Rollups are layer 2 scaling solutions which increases Ethereum’s scalability via its throughput preventing network congestion and reducing fees. Learn more about Optimistic Rollups & ZK-Rollups here.

Learn more about the "Post-Merge Clean-Up" on Ethereum.

Substrate is not part of Polkadot, but rather Polkadot is built on the Substrate SDK (as well as Kusama, Acala, and other blockchains in the ecosystem). Any blockchain built on Substrate can be easily integrated into Polkadot and become parachains or parathreads, if desired.

This article explains how NEAR currently employs sharding to overcome the scalability trilemma and how it plans to deliver near infinite scalability to its network in the future. Let the sweet song of scalability commence!