Blockchain testnets are an interesting subject because they come in all shapes and sizes. So, in this post, my goal is to leverage my inside experience as the CEO of Koinos Group (developers of Koinos) to demystify testnets and perhaps give some insight into why they seem to have such an impact on price. The most obvious place to start is with the name: testnet. The purpose of a testnet is to test a network. At a very high level, there are two “flavors” of testnet. The first is a testnet that is released prior to a mainnet (main network), and the second is a testnet that is released after a mainnet is already in operation.
Full story : Inside the blockchain developer’s mind: What is a testnet?