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Power BI Essentials

📊 Power BI Fundamentals⏱ 15 min⭐ 100 BASE XP

Business Intelligence for Everyone

Power BI is Microsoft's enterprise-grade business intelligence platform that transforms raw data into interactive visualisations, dashboards, and reports. In 2026, Power BI is deeply integrated with Copilot, enabling natural language queries, AI-generated report summaries, and smart narrative generation.

Core Components

ComponentPurposeUser
Power BI DesktopAuthor reports locally with a rich drag-and-drop designerAnalysts, developers
Power BI ServiceCloud portal for publishing, sharing, and scheduling refreshAll users
Power BI MobileConsume reports on iOS and Android devicesExecutives, field workers
Power BI EmbeddedEmbed interactive reports inside your own applicationsDevelopers (ISVs)

Copilot in Power BI

Copilot in Power BI allows users to create entire report pages from natural language prompts, generate DAX measures by describing what they need, and produce executive narrative summaries of data trends — all without writing a single formula.

DAX Basics

Data Analysis Expressions (DAX) is the formula language for Power BI. Key concepts include:

  • Measures: Dynamic calculations evaluated at query time (e.g., Total Sales = SUM(Sales[Amount]))
  • Calculated Columns: Row-by-row computed values stored in the data model
  • Filter Context: How slicers and filters affect measure calculation — the most important DAX concept to master
  • Time Intelligence: Built-in functions like TOTALYTD, SAMEPERIODLASTYEAR for temporal analysis

Data Sources

Power BI connects to 200+ data sources including SQL Server, Azure Synapse, SharePoint, Excel, Dataverse, REST APIs, and third-party services like Salesforce and Google Analytics.

💡 Key Insight: Start with Copilot to scaffold reports quickly, then refine with custom DAX measures. This hybrid approach lets business users get 80% of the value immediately while analysts add the remaining 20% of precision.
SYNAPSE VERIFICATION
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What is the primary purpose of DAX in Power BI?
Styling reports
Creating dynamic calculations and measures that respond to user filters and slicers
Managing user permissions
Connecting to databases
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Power BI Essentials | Power BI Fundamentals — Power Platform Academy