Is Camens Really a Data Reduction Technique?

Camens is often used to reduce a multitude of data items you have. It's very ubiquicious technique, but it needs further techniques to be useful on its own. So i recently heard of a usage, also in our bank, where k means played a role. And ka means is everywhere. If people talk about data analysis, one of the first things usually here as k means. That was something o and i was just curious, how good can they be? And did some chorus at audacity and deep learning,. Although i have done back provogation during my research time as well. But to get fluent in the modern technologies.