Customer segmentation it’s the answer to the question „who your users are?”. If we talking about people, response to this can’t be simple and it’s better to be careful about generalization. This tool allows us to specify which clients we are looking for and find the key definition of the value of each client. It’s necessary to define the information about your users in a way that will help to understand their needs. Customer segmentation divided users due to various parameters. Groups are based on their age, interests, behavior, demographics, technology, or needs. The key parameter of customer segmentation it’s to understand what would you like to achieve through this. This tool is focused on creating simple and effective marketing strategies for a client product’s target audience. The outcome of segmentation allows increasing profits by adjusting sales to real users. Also, during using this tool it’s easy to find a perspective on problems with marketing. It makes it possible to distinguish users who realistically generate the largest income from those users who takes time without giving any profit.