INFURA is a popular technology for connecting to the blockchain without having to download the several hundred gigabytes that it contains, because it freely provides you with full nodes.
INFURA essentials
Understanding INFURA
INFURA helps millions of users get connected to the blockchain by providing them with ready-to-use Ethereum instances. It's one of the biggest projects that aims to revolutionize Ethereum's adoption, since everybody is able to connect to Ethereum immediately to process transactions and interact with the blockchain.
It powers popular applications such as MetaMask to make transactions from your browser. That's one of the reasons ICOs became so popular—because people found a simple...