Why is it trending?
High gas fees are a thing of the past. In 2026, Layer 2 (L2) networks secure over $150 billion in assets. The narrative has shifted from "One Chain" to a "Modular" approach where different layers handle different tasks.
Educational Insight:
Rollups: Networks like Arbitrum "roll up" thousands of transactions into one single proof sent to Ethereum, slashing costs.
Data Availability: $TIA (Celestia) specializes only in storing data, making it cheaper for L2s to operate.
Interoperability: The focus now is on "Seamless Cross-Chain" movement—users shouldn't even know they are switching between Base, Optimism, or Arbitrum.
Investor Note: Scalability is no longer a "problem to solve" but a "standard to build on." Focus on ecosystems with the highest "Active Developer" counts.