What is SPV?
SPV stands for Simplified Payment Verification. It was first described by Satoshi Nakamoto in the original Bitcoin whitepaper. This method allows a wallet to provide strong security without the need for downloading the blockchain or running a full node.
SPV lets you validate your own transactions by ensuring they are confirmed in the blockchain. It uses the best header chain with the most cumulative proof of work and the correct hashing difficulty level.
Electron Cash relies on a distributed network of servers which handle the heaviest part of blockchain operations. Your private keys sign transactions locally. They are never sent to the servers.