For more details, Download ECW Brochure
ECW for ArcGIS Server is a paid add-on product sold to Esri Enterprise customers. It enable Esri ArcGIS for Server to read and serve ECW imagery via standard web services. The plugin provides compatibility with the ECW format, enabling users to serve ECW imagery from ArcGIS Server 10 as Web Coverage Services (WCS) and Web Map Services (WMS).
