Polkadot’s cross-chain technology leverages its Layer 0 architecture to connect diverse blockchains, fostering scalability and adoption. Its 1,500 TPS surpasses Cosmos and Avalanche, while parachains like Astar and Moonbeam drive DeFi and NFT innovation. Compared to Cosmos’s hub-and-zone model, Polkadot’s shared security reduces costs for new projects. Despite Ethereum’s larger ecosystem, Polkadot’s flexibility and lower fees attract developers. With a market cap significantly below its peak, DOT offers upside potential, especially with Polkadot 2.0 upgrades enhancing resource allocation, making it a promising investment in the multi-chain future.