What is GIS?

A spatial system that creates, manages, analyses, and maps all types of data

A geographic information system (GIS) is a system that creates, manages, analyses, and maps all types of data. GIS connects data to a map, integrating location data (where things are) with all types of descriptive information (what things are like there). This provides a foundation for mapping and analysis that is used in science and almost every industry. GIS helps users understand patterns, relationships, and geographic context. The benefits include improved communication and efficiency as well as better management and decision making.

What is GIS?

Hundreds of thousands of organisations 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 does GIS work?

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 visualisations created with GIS that inform, engage and inspire.
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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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