What is Power BI?
A friendly Microsoft tool that turns raw data into colourful, interactive dashboards — mostly by clicking and dragging.
What you will learn
- Say what Power BI is in plain words
- Understand business intelligence and dashboards
- Know the three parts: Desktop, Service and Mobile
Turning data into pictures
Power BI is a Microsoft tool that takes your data — from Excel, files or a database — and turns it into charts, tables and dashboards that anyone can read at a glance. The best part: you build most of it by clicking and dragging, not by writing code.
This whole idea has a name: business intelligence (BI). It simply means using data to make better decisions. Instead of scrolling through ten thousand rows in a spreadsheet, you look at one clear picture and instantly see what is going on.
What is a dashboard?
A dashboard is a single screen that shows the most important numbers together — like the dashboard in a car shows speed, fuel and temperature at once. A sales dashboard might show total sales, the top product, and a trend line over time, all on one page.
Why it helps: rows become an answer
Here is the whole point of Power BI in miniature. Imagine a spreadsheet with many sales rows. On its own it is just numbers; Power BI turns it into a clear answer.
Raw rows (hard to read) -> Power BI shows
Keyboard North 1200 Total Sales: 11,750
Mouse South 450 Top region: North
Monitor North 8900 Top product: MonitorNote: Output: Instead of reading every row, you instantly see the three answers that matter: total sales of 11,750, the strongest region (North) and the best product (Monitor). Turning rows into answers like this is exactly what business intelligence means.
Isn’t this just Excel?
If you have used a spreadsheet, Power BI will feel familiar — but it is built for a different job. Excel is brilliant for entering and editing numbers cell by cell. Power BI is built for connecting to data and showing it as interactive pictures you can share. Here is the difference at a glance:
| Excel | Power BI | |
|---|---|---|
| Best at | Typing and editing numbers | Connecting data and showing it |
| Looks like | A grid of cells | A page of charts and cards |
| When data changes | You re-edit by hand | Click Refresh and it updates |
| Interactive for viewers | Not really | Yes — click a slicer and it all filters |
| Sharing | Email the file around | Publish once; people open a live link |
A simple way to remember it: you often prepare data in Excel, then present and explore it in Power BI. They are teammates, not rivals.
The three parts of Power BI
Power BI is not one app — it is a small family of three. You will spend almost all your learning time in the first one.
| Part | What it is | You use it to |
|---|---|---|
| Power BI Desktop | A free Windows app on your computer | Build reports and dashboards (this is where you work) |
| Power BI Service | A website (app.powerbi.com) | Publish and share your work with others |
| Power BI Mobile | A phone / tablet app | View dashboards on the go |
A normal day looks like this: you build in Desktop, you publish to the Service so the link can be shared, and your manager views it on Mobile. Same report, three places.
Tip: Power BI Desktop is completely free. Download it from the Microsoft Store or the Power BI website and you can follow this whole course without paying anything.
Watch out: Power BI Desktop runs on Windows only. On a Mac, you can use a Windows virtual machine, or build similar dashboards in the Power BI Service website in your browser.
Q. Which part of Power BI do you use to build your reports?
✍️ Practice
- Write a one-sentence definition of business intelligence in your own words.
- List three numbers you would want on a dashboard for a small online shop.
🏠 Homework
- Download Power BI Desktop (free) and open it. Note the names of the main areas you can see on screen.