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GIS Resources

Learn about geographic information system (GIS) concepts, technologies, products, and communities.

A person wearing glasses and a blue striped collared shirt looking thoughtfully at a laptop display, overlaid with three small colorful projecting maps
  • A 3D map image with a gray street map layer, overlaid with a glowing purple grid, overlaid again with a layer of smaller yellow map features

    What is GIS

    GIS is a spatial system that creates, manages, analyzes, and maps all types of data.
  • A stylized icon of a book connected to a stack of may layers, a street map, and an "information" symbol of a letter I inside a circle

    GIS Dictionary

    A resource for definitions of GIS terms related to analysis, GIS modeling, web-based GIS, cartography, and Esri software.
  • An ArcGIS Living Atlas of the World icon on a plain green background

    ArcGIS Living Atlas of the World

    The foremost collection of geographic information from around the world, including maps, apps, and data layers.
  • The GIS Day logo on a blue map-like background

    GIS Day

    GIS Day is an annual event celebrating GIS technology and how it’s used around the world to pave the way for a better future.
  • An abstract pattern of white dots scattered over a flowing purple and aqua blue background

    Massive open online courses (MOOCs)

    MOOCs are free online courses for anyone who wants to build new GIS skills, grow professionally, and expand their horizons.