Scalability is essential for blockchain mass adoption.
Layer 2 solutions like Rollups and Sidechains enhance performance.
Balancing security, decentralization, and speed is tough.
Sharding and block size increases boost throughput.
Optimistic and ZK-Rollups process transactions off-chain.
Independent chains link to the main blockchain.
Off-chain transactions reduce mainnet load.
Polygon and Lightning Network solve real-world issues.
Interoperability and security risks remain.
Hybrid solutions may dominate blockchain growth.