What network does IOTA use?

I'm quite curious about the technological backbone of IOTA. Could you please explain to me what network does IOTA actually utilize? I've heard about blockchain technology being prevalent in the cryptocurrency world, but I'm not sure if IOTA follows the same path. Or does it have its own unique approach? I'm eager to understand the specifics of the network architecture and how it contributes to the functionality and uniqueness of IOTA.