For engineering teams migrating from V1 or integrating WalletConnect for the first time, practical experience often outweighs theory. The core of migration lies in understanding the separation of 'Pairing and Session', as well as the abstraction of 'Namespaces for multi-chain'. First, prioritize using official SDKs and UI components (like Web3Modal), which can save a significant amount of compatibility work; during integration, persist pairing information and session metadata locally, and design reliable reconnection and exponential backoff strategies to cope with network fluctuations. In terms of error handling, map exceptions such as user rejection, unsupported chains, and invalid methods to different frontend guidance: user rejection prompts can guide retries or downgraded experiences; unsupported chain prompts suggest users switch wallets or display restricted features. Testing strategies should cover: cross-chain namespace testing, disconnection reconnection recovery, session expiration and renewal logic, as well as domain/certificate exception handling in the Verify scenario. For performance optimization, focus on the RTT (Round Trip Time) during pairing and the relay queue length, and support self-built relays or choose geographically closer nodes to reduce latency when necessary. In terms of security and compliance, ensure natural language explanations before signing, display Verify results, and provide an 'one-click revoke all sessions' feature in the product. Finally, observability metrics are indispensable: connection success rate, time spent on first pairing, signature failure rate, average session lifespan, and rejection rate; these data can directly drive experience improvements. By refining these engineering and product details, WalletConnect will no longer be an 'external dependency', but will become a stable, secure, and scalable connection layer in your application. #WalletConnect $WCT @WalletConnect