The Lightning Network, or LN, is one of the most expected protocols. It can help to solve the problem of transaction’s speed. The main difference is that the blockchain doesn’t includes the information about accomplished micropayments. It means, that users can make so many payments as they need and only a total balance of transactions will be recorded in the blockchain.
There is nothing to worry about safety because a recipient can’t get money until he or she signs a special agreement. According to this document a remitter can get paid back, if other party of the contract fails to comply fully with the requirements.
Speaking of advantages of LN, it should be noticed that the technology allows to make micropayments without any impacts on the blockchain. Users can also exchange cryptocurrency without intermediaries with the help of so called atomic swap. The essence of this process is in specific terms of a bargain. A transaction must be fully accomplished or the deal is off.
Atomic swaps has already been tested with the following blockchains: Litecoin, Decred, Vertcoin and Bitcoin.