Power BI can be used by anyone for their needs. However, some users are more likely to use it than others:
Consumers of Reports: They read the reports based on their required information.
Report Analyst: Require specific data from the reports for their analysis.
Self-Service Data Analysts: They are seasoned business data users who work and know well about the information they are using.
Basic Data Analyst: They have experience with Power BI Service and can create their datasets.
Advanced-Data Analysts: are familiar with Power BI and have experience writing SQL queries. In addition, they have training in DAX and have experience with advanced Power BI data modeling.