The Digital World is the virtual space built from Earth's communication networks where Digimon inhabit. Lands and islands were created as projects intended to make Digimon become closer to living things. As a result, the Digital World was formed. This Digital World exists inside the host computer called Yggdrasil and is under control of Artificial Intelligence. Digimon are a like-a-life organism with independent intelligence. They grow in a way similar to real organisms. (wiki)