Basically, you need to change the “vmsize” parameter in the ServiceConfiguration.cscfg file to the required value () and re-deploy the package back to Azure.
Please note – this is an Azure-related configuration. It is not handled by Kentico CMS itself. You can find more info and a deeper description including screenshots at http://blog.nimbo.com/changing-the-instance-size-from-the-windows-azure-management-portal/
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