What is GIS?

A framework to organize, communicate, and understand the science of our world

A geographic information system (GIS) is a framework for gathering, managing, and analyzing data. Rooted in the science of geography, GIS integrates many types of data. It analyzes spatial location and organizes layers of information into visualizations using maps and 3D scenes. ​With this unique capability, GIS reveals deeper insights into data, such as patterns, relationships, and situations—helping users make smarter decisions.  

What is GIS

Hundreds of thousands of organizations in virtually every field are using GIS to make maps that communicate, perform analysis, share information, and solve complex problems around the world. This is changing the way the world works.

Identify problems Monitor change Manage & respond to events Perform forecasting Set priorities Understand trends

How GIS Works

GIS technology applies geographic science with tools for understanding and collaboration. It helps people reach a common goal: to gain actionable intelligence from all types of data.

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    Maps

    Maps are the geographic container for the data layers and analytics you want to work with. GIS maps are easily shared and embedded in apps, and accessible by virtually everyone, everywhere.
    Read about maps in The ArcGIS Book
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    Data

    GIS integrates many different kinds of data layers using spatial location. Most data has a geographic component. GIS data includes imagery, features, and basemaps linked to spreadsheets and tables.
    Read about data in The ArcGIS Book
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    Analysis

    Spatial analysis lets you evaluate suitability and capability, estimate and predict, interpret and understand, and much more, lending new perspectives to your insight and decision-making.
    Read about analysis in The ArcGIS Book
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    Apps

    Apps provide focused user experiences for getting work done and bringing GIS to life for everyone. GIS apps work virtually everywhere: on your mobile phones, tablets, in web browsers, and on desktops.
    Read about GIS apps in The ArcGIS Book
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Who uses GIS

Modern GIS is about participation, sharing, and collaboration. Discover how the technology is strengthening relationships, driving efficiencies, and opening communications channels in your community.

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    GIS Showcase

    Discover interactive maps and visualizations created with GIS that inform, engage, and inspire.
    Learn more
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    History of GIS

    Explore the evolution of GIS from a rudimentary tool to a comprehensive platform for designing a smarter world.
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    GIS Careers

    Learn how GIS professionals qualify for occupations in countless fields.
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    GIS Resources

    Find resources for expanding your knowledge about GIS.
    Learn more
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