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Is there anywhere in the service runtime that would tell me if I'm currently running on 'Staging' or 'Production'? Manually modifying the config to and from production seems a bit cumbersome.

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Check this code sample posted by Microsoft doing the exact thing here: https://code.msdn.microsoft.com/windowsazure/CSAzureDeploymentSlot-1ce0e3b5

image showing Staging instance

image showing Production instance

protected void Page_Load(object sender, EventArgs e) 

    // You basic information of the Deployment of Azure application. 

    string deploymentId = RoleEnvironment.DeploymentId; 

    string subscriptionID = "<Your subscription ID>"; 

    string thrumbnail = "<Your certificate thumbnail print>"; 

    string hostedServiceName = "<Your hosted service name>"; 

    string productionString = string.Format(

        "https://management.core.windows.net/{0}/services/hostedservices/{1}/deploymentslots/{2}",

        subscriptionID, hostedServiceName, "Production"); 

    Uri requestUri = new Uri(productionString); 

    // Add client certificate. 

    X509Store store = new X509Store(StoreName.My, StoreLocation.LocalMachine); 

    store.Open(OpenFlags.OpenExistingOnly); 

    X509Certificate2Collection collection = store.Certificates.Find(

        X509FindType.FindByThumbprint, thrumbnail, false); 

    store.Close(); 

    if (collection.Count != 0) 

    { 

        X509Certificate2 certificate = collection[0]; 

        HttpWebRequest httpRequest = (HttpWebRequest)HttpWebRequest.Create(requestUri); 

        httpRequest.ClientCertificates.Add(certificate); 

        httpRequest.Headers.Add("x-ms-version", "2011-10-01"); 

        httpRequest.KeepAlive = false; 

        HttpWebResponse httpResponse = httpRequest.GetResponse() as HttpWebResponse;

        // Get response stream from Management API. 

        Stream stream = httpResponse.GetResponseStream(); 

        string result = string.Empty; 

        using (StreamReader reader = new StreamReader(stream)) 

        { 

            result = reader.ReadToEnd();

        } 

        if (result == null || result.Trim() == string.Empty) 

        {

            return;

        }

        XDocument document = XDocument.Parse(result); 

        string serverID = string.Empty; 

        var list = from item

                   in document.Descendants(XName.Get("PrivateID",

                       "http://schemas.microsoft.com/windowsazure")) 

                   select item; 

        serverID = list.First().Value; 

        Response.Write("Check Production: "); 

        Response.Write("DeploymentID : " + deploymentId

            + " ServerID :" + serverID); 

        if (deploymentId.Equals(serverID)) 

            lbStatus.Text = "Production"; 

        else 

        { 

            // If the application not in Production slot, try to check Staging slot. 

            string stagingString = string.Format(

                "https://management.core.windows.net/{0}/services/hostedservices/{1}/deploymentslots/{2}",

                subscriptionID, hostedServiceName, "Staging"); 

            Uri stagingUri = new Uri(stagingString); 

            httpRequest = (HttpWebRequest)HttpWebRequest.Create(stagingUri); 

            httpRequest.ClientCertificates.Add(certificate); 

            httpRequest.Headers.Add("x-ms-version", "2011-10-01"); 

            httpRequest.KeepAlive = false; 

            httpResponse = httpRequest.GetResponse() as HttpWebResponse; 

            stream = httpResponse.GetResponseStream(); 

            result = string.Empty; 

            using (StreamReader reader = new StreamReader(stream)) 

            { 

                result = reader.ReadToEnd();

            } 

            if (result == null || result.Trim() == string.Empty) 

            {

                return;

            }

            document = XDocument.Parse(result); 

            serverID = string.Empty; 

            list = from item

                   in document.Descendants(XName.Get("PrivateID",

                       "http://schemas.microsoft.com/windowsazure")) 

                   select item; 

            serverID = list.First().Value; 

            Response.Write(" Check Staging:"); 

            Response.Write(" DeploymentID : " + deploymentId

                + " ServerID :" + serverID); 

            if (deploymentId.Equals(serverID)) 

            {

                lbStatus.Text = "Staging";

            }

            else 

            {

                lbStatus.Text = "Do not find this id";

            }

        } 

        httpResponse.Close(); 

        stream.Close(); 

    } 

}

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