Power BI is a desktop application for Windows and also a SaaS solution for hosting the solutions you build in the desktop tool.
The SaaS product offering is confusing for the time being due to the introduction of Fabric, which includes Power BI and a whole data stack besides.
Your Power BI power users will need a Windows platform available, though I have seen plenty of use of Parallels or a remote desktop infrastructure for users not using a Windows device.
There are authoring experiences in-browser that are improving and in some cases surpassing what is in Power BI Desktop, but if you're doing a lot of work authoring in Power BI, then the desktop application is where you want to be for now.
For pure querying or just data model development, there are third party tools that are superior to Power BI Desktop (disclosure: I do work part time with one of these third party vendors).
Power BI is a desktop application for Windows and also a SaaS solution for hosting the solutions you build in the desktop tool.
The SaaS product offering is confusing for the time being due to the introduction of Fabric, which includes Power BI and a whole data stack besides.
Your Power BI power users will need a Windows platform available, though I have seen plenty of use of Parallels or a remote desktop infrastructure for users not using a Windows device.
There are authoring experiences in-browser that are improving and in some cases surpassing what is in Power BI Desktop, but if you're doing a lot of work authoring in Power BI, then the desktop application is where you want to be for now.
For pure querying or just data model development, there are third party tools that are superior to Power BI Desktop (disclosure: I do work part time with one of these third party vendors).