Polkadot introduces the concept of parachains — independent blockchains that connect to a central relay chain. This structure allows specialized networks to operate with their own rules while still sharing security and communication. The key lesson Polkadot teaches is that interoperability does not mean sacrificing independence. Instead, it creates a system where multiple chains can collaborate, exchange data, and scale together, helping Web3 evolve into a network of connected ecosystems rather than isolated projects.$DOT #dot #Polkadot #interoperability #Web3