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What is layer 2 on Ethereum?

Layer 2 is an umbrella term to describe solutions that build on top of Ethereum mainnet (layer 1) to improve the scalability of the Ethereum network.
What is layer 2 on Ethereum?
There are a number of layer 2 solutions on Ethereum. In this article, we are going to take a brief look at how each of these solutions approach bringing scalability to Ethereum.

Table of Contents

  1. Why are layer-2 solutions needed on Ethereuem?
  2. What are the types of layer-2 solutions on Ethereum?
  3. Channels
  4. Plasma
  5. Independent sidechains
  6. Rollups
  7. Layer-2 ecosystem
  8. Explore the Ethereum Ecosystem

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What is ETH gas and how do fees work in Ethereum?

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