Too Long; Didn't Read
Cosmos’ grand vision is an [Internet of Blockchains] — a vast network of interconnected blockchains, or zones as they are called in the Cosmos ecosystem. The Inter-Blockchain Communication (IBC) protocol allows multiple blockchains to communicate with each other. This flexibility introduces a slew of complexities that need to be dealt with. Application specific blockchains — the opposite of general purpose blockchains – are designed for their specific applications. This process requires a new piece of infrastructure: a relayer, which transports data packets between a pair of blockchains.