"Business intelligence (BI) leverages software and services to transform data into actionable intelligence that informs an organization's strategic and tactical business decisions" (CIO). "BI is an umbrella term that includes the applications, infrastructure, and tools, and best practices that enable access to and analysis of information to improve and optimize decisions and performance" (Gartner). It comprises "technologies, applications, and practices for the collection, integration, analysis, and presentation of business information. The purpose of business intelligence is to support better business decision-making" (OLAP.com).
"BI technologies provide historical, current, and predictive views of business operations. Common functions of business intelligence technologies include reporting, online analytical processing, analytics, data mining, process mining, complex event processing, business performance management, benchmarking, text mining, predictive analytics, and prescriptive analytics" (Wikipedia). "BI tools access and analyze data sets and present analytical findings in reports, summaries, dashboards, graphs, charts, and maps to provide users with detailed intelligence about the state of the business" (CIO).
A definitive guide to data definitions and trends, from the team at Stitch.