SwitchFi is a non-custodial routing service that compares cross-chain routes and settles swaps, exchanges, or crypto conversions through the best path. It supports multiple chains, including EVM, Tron, Bitcoin, and Solana, and allows users to connect their wallets to perform transactions. The service provides live quotes and estimated rates for various cryptocurrency pairs, and it also supports multiple wallet types. SwitchFi's core mechanics involve comparing routes and settling transactions through the most efficient path, ensuring that users get the best possible rate for their transactions.