In computing, interoperability is the ability of computer systems to exchange and make use of information. The term is often used when discussing two or more systems that are able to work together, even if they were not designed to do so. Blockchain interoperability is the ability of different blockchain systems to work together. This is important because it allows for the exchange of information and value between different blockchains. For example, if someone has a bitcoin on one blockchain, they should be able to send it to someone on another blockchain without losing the value of the bitcoin. There are a few different ways to achieve blockchain interoperability, including using sidechains, interchain bridges, and cross-chain swaps. Each method has its own advantages and disadvantages, but all of them are working towards the same goal: making it possible for different blockchains to work together.