Okay kiddo, so sometimes there are jobs that the government needs to do, but they don't want to do it themselves. So they make a special group called an independent administrative institution (IAI) to do it instead.
Now, the cool thing about an IAI is that it can act kind of like a company, even though it's part of the government. It can make its own decisions and plans, hire and pay employees, and get money to do its job.
But here's the tricky part: even though it's independent, it's still part of the government. That means it has to follow the rules and laws that the government sets out. And it has to report back to the government and show them what it's been doing.
Overall, an independent administrative institution is a way for the government to get important work done, while still having some control over how it's done.