Peer to peer is a crucial part of any blockchain application that offers decentralized network communication between the nodes. The presentation will showcase a general overview of P2P networks including different network types and their uses in blockchain applications. We will introduce the Lisk P2P network and its features that exist in the form of an independent @liskhq/lisk-p2p library that is used in Lisk networks. Furthermore, the talk will showcase the Lisk SDK which can be used to build your own blockchain application in JavaScript.