Bitcoin enthusiast and platform lead of BitGo has just posted a tweet about awesome speed of transaction over Bitcoin lightning network. => Tweet link
Lightning is a decentralized network using smart contract functionality in the blockchain to enable instant payments across a network of participants.
The Lightning Network is dependent upon the underlying technology of the blockchain. By using real Bitcoin/blockchain transactions and using its native smart-contract scripting language, it allows to create a secure network of participants which are able to transact at high volume and high speed.