🔘Layer 3 Infrastructure Overview🔘:
1. Base Layer (L1):
Ethereum ⛓️: Provides security and decentralization.
2. Scaling Layer (L2):⚖️
Arbitrum, Optimism, zkSync, Starknet: Handle most transaction execution and bundle them to L1.
3. Application/Custom Layer (L3):
Arbitrum Orbit: Lets devs build their own L3 chains atop Arbitrum.
zkSync Hyperchains: Modular L3s connected via zkLink or shared sequencers.
Starknet AppChains (coming): L3 rollups with custom logic & privacy.
Polygon CDK L3s: Soon possible on top of Polygon L2s.
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Why Layer 3?
App-specific logic (gaming, DeFi, privacy, AI, etc.)
Ultra-low fees (ideal for microtx, NFTs, etc.)
Interoperability via shared L2 base
Greater scalability without clogging mainnet
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