Thank you rlwatson, It is clear from what you said that there are some difference interms of functionalities. Is there any table to compare what ArcGIS Online offers and what it doesn't offer in comparision with ArcGIS Server. If some one has process intensive operations which one is better. Example you can use a webservice to carry process intensive tasks at server level in ArcGIS Server. Can we do the same with ArcGIS online. Would there be any issues such as security, sability and performance? I could not find any elaborate discussion on this. I see ESRI is promoting aggressively to push every one to ArcGIS Online. All I know is that ArcGIS online is more of creating web GIS applications, with ease, that involve sharing maps over the internet. Also what is future of ArcGIS Server? Is it eventually going to phase out as more fuctionalities are provided to ArcGIS online? I am wondering how it would impact on the developers and users of these products. These products are expensive and takes lots of time and money. Having a good understanding will help to choose whether to stick with ArcGIS Server or ArcGIS Online.
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