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Note: The ECW raster format is directly supported in ArcGIS Desktop, but not in ArcGIS Server, ArcIMS, or ArcGIS Image Server (the ArcGIS Server Image Extension). To use ECW in server-based products requires additional licensing permissions from ERDAS, Inc., the inventors of the ECW format.For ArcGIS Server version 10, ERDAS provides the ECW for ArcGIS Server. Once obtained, follow the product's directions to implement.
Note: ERDAS is now part of the Hexagon AB, and there may be changes to the process for acquiring this product.
Note: These procedures allow for access to ECW files. However, they do not allow data delivery by way of high-speed ECWP streaming imagery protocol.