I have a two server SharePoint OnPremise farm. In the last years I built some webapps running on a separate server using SharePoint CSOM, which are consumed mostly by Javascript calls from SharePoint pages. Where possible I used Javascript CSOM, but for more complex operations/computations I moved it to a webapp.
Sometimes I found limitations using CSOM, e.g set Editor or Modified. I was wondering if it is possible to add a third server in the farm, using it only for those webapps, if it were part of the farm, it would be possible to use the ServerApi.

Is there a way to add another Server in order to use the Server Api?

1 Answer 1


You can add new web sites to the IIS instance on your existing web front end(s) and use the server API. No need to spin up a new server. They will have to run on a different port however.

  • Thanks for your comment, but is there no need or is there no way to set up a new server? It think it would be bettere to keep the load separated.
    – Emaborsa
    Commented Apr 27, 2020 at 8:49

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