Haizum is a computer program that helps people talk to each other over the internet. It's kind of like a phone, but instead of calling someone, you type messages to them on your computer. With Haizum, you can create groups of people to chat with at the same time.
You might use Haizum to talk to your friends or family who live far away, or to talk to people you work with on a project. Think of it like having your own special room where you can talk to whoever you want, whenever you want, and from wherever you are. Haizum makes it easy for people to stay connected, even if they're far away from each other.