One more question - dog people, I hope you don't mind

The announcer said that two of the three poodle categories were in the Best in Show judging. They're each in a different group. I noticed that their coats were groomed the same way. Is that a special grooming they get for shows? It's so elaborate. I wonder why they're groomed that way, does it allow the judge to see characteristics of the dog better? I only know one person who has a poodle, and he came from a shelter so he's probably a random breed. She couldn't tell me why the purebred poodles are groomed in that style. Her dog just gets a basic treatment for pets at the groomer. (He still looks cute to me!)

thanks,
elyse