File:Buildingmapping-r0s2.png

Esri imagery is not open licensed, but is available for deriving open licensed map data.

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Esri (ArcGIS.com): "(...) Esri and its imagery contributors grant Users the non-exclusive right to use the World Imagery map to trace features and validate edits in the creation of vector data. Users that create vector data from the World Imagery map may want to publicly share that vector data through a GIS data clearinghouse of its own or through another open data site. This public sharing could be achieved through ArcGIS Open Data or the OpenStreetMap (OSM) Initiative. For ArcGIS users that want to contribute such vector data to OSM, Esri provides applications and services directly accessible from ArcGIS platform. Users acknowledge that any vector data contributed to OSM is then governed by and released under the OpenStreetMap License (e.g. ODbL).
Except for the additional limited rights granted above, any and all other uses of the World Imagery map remain subject to the terms and conditions set forth in the Esri Master Agreement or Terms of Use, as applicable. Esri and its imagery contributors retain all right, title, and interest in and to their respective imagery data contributed to the World Imagery map."  (→ source)
"For More Info, visit: https://goto.arcgisonline.com/maps/World_Imagery "

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This image is a relatively minor extract of the (worldwide) Esri imagery, used for illustrative purposes on the OpenStreetMap wiki, to help document ways of using and interpreting the imagery in the OpenStreetMap mapping process.