The Power BI service, or simply the Service, is a web-based SaaS product that is complementary to the Power BI Desktop. The Service provides a means by which Power BI users can create new datasets and reports as well as publish, share, and collaborate on data models and reports that are created in Power BI Desktop. The Service is built around storing reports, dashboards, workbooks, datasets, and dataflows. 

Let's take a brief look at the Service and the major capabilities it provides.