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Blockchain scalability is key. Layer 2 solutions like Lightning Network and state channels offload transactions to improve speed and reduce fees. Sharding, seen in Ethereum 2.0, splits the network to handle more data. Sidechains create parallel blockchains to ease congestion. Each has pros and cons, balancing security, speed, and decentralization. Choose wisely for your crypto journey.

Scalability solutions like Lightning Network, sharding, and sidechains are crucial for blockchain development. Each option offers unique benefits and trade-offs in security and speed. Understanding these tools is key for navigating the crypto landscape effectively.