diff --git a/src/Umbraco.Core/Deploy/IFileType.cs b/src/Umbraco.Core/Deploy/IFileType.cs
new file mode 100644
index 0000000000..f7ab22ffae
--- /dev/null
+++ b/src/Umbraco.Core/Deploy/IFileType.cs
@@ -0,0 +1,32 @@
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Umbraco.Core.Deploy
+{
+    public interface IFileType
+    {
+        Stream GetStream(StringUdi udi);
+
+        Task<Stream> GetStreamAsync(StringUdi udi, CancellationToken token);
+
+        Stream GetChecksumStream(StringUdi udi);
+
+        long GetLength(StringUdi udi);
+
+        void SetStream(StringUdi udi, Stream stream);
+
+        Task SetStreamAsync(StringUdi udi, Stream stream, CancellationToken token);
+
+        bool CanSetPhysical { get; }
+
+        void Set(StringUdi udi, string physicalPath, bool copy = false);
+
+        // this is not pretty as *everywhere* in Deploy we take care of ignoring
+        // the physical path and always rely on Core's virtual IFileSystem but
+        // Cloud wants to add some of these files to Git and needs the path...
+        string GetPhysicalPath(StringUdi udi);
+
+        string GetVirtualPath(StringUdi udi);
+    }
+}
diff --git a/src/Umbraco.Core/Deploy/IFileTypeCollection.cs b/src/Umbraco.Core/Deploy/IFileTypeCollection.cs
new file mode 100644
index 0000000000..9e2ab137d1
--- /dev/null
+++ b/src/Umbraco.Core/Deploy/IFileTypeCollection.cs
@@ -0,0 +1,9 @@
+namespace Umbraco.Core.Deploy
+{
+    public interface IFileTypeCollection
+    {
+        IFileType this[string entityType] { get; }
+
+        bool Contains(string entityType);
+    }
+}