Bitcoin's network scalability increasingly relies on Layer 2 solutions to address its inherent limitations. The base layer, constrained by block size and transaction throughput, struggles to handle high volumes efficiently. Solutions like the Lightning Network enable faster, cheaper transactions by processing them off-chain while leveraging Bitcoin's security. However, Layer 2 introduces trade-offs: complexity, potential centralization risks, and reliance on user adoption. Critics argue that without base-layer improvements, over-dependence on Layer 2 could fragment the ecosystem. Proponents counter that Layer 2 is essential for mass adoption, offering scalability without compromising decentralization. While Layer 2 solutions are critical, their success hinges on seamless integration and user trust.