At a fundamental level, it's not complex technology but it can enable complex solutions. It can help solve some difficult computing challenges around security and it introduces capabilities that are disruptive to the status quo. For example, Bitcoin effectively eliminates the need for banks and a whole host of financial middle men, that's disruptive. Taken further, blockchain technology can be used as a foundation for a new generation of software that distributes code and enables transactions between individuals and machines without the need for complex server infrastructure.
It's a peer-to-peer network architecture meaning that all participants are equal in their role on the network and its topology is flat, in other words, unlike for example a client's server, it is without hierarchy. Just as the internet enabled new services such as the World Wide Web, email, and FGP and all the benefits those solutions have created, it is increasingly apparent that the blockchain will enable new computing platforms that ride on top of it too, such as Ethereum, Rootstock, and Tezos.
Blockchain forces us to think differently about technology and it presents exciting opportunities in a significant number of use cases and industries.
