diff --git a/DnsServerCore.ApplicationCommon/IDnsApplication.cs b/DnsServerCore.ApplicationCommon/IDnsApplication.cs
new file mode 100644
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+++ b/DnsServerCore.ApplicationCommon/IDnsApplication.cs
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+/*
+Technitium DNS Server
+Copyright (C) 2021  Shreyas Zare (shreyas@technitium.com)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+using System;
+using System.Threading.Tasks;
+
+namespace DnsServerCore.ApplicationCommon
+{
+    /// <summary>
+    /// Allows an application to initialize itself using the DNS app config.
+    /// </summary>
+    public interface IDnsApplication : IDisposable
+    {
+        /// <summary>
+        /// Allows initializing the DNS application with a config. This function is also called when the config is updated to allow reloading.
+        /// </summary>
+        /// <param name="dnsServer">The DNS server interface object that allows access to DNS server properties.</param>
+        /// <param name="config">The DNS application config stored in the <c>dnsApp.config</c> file.</param>
+        Task InitializeAsync(IDnsServer dnsServer, string config);
+
+        /// <summary>
+        /// The description about this app to be shown in the Apps section of the DNS web console.
+        /// </summary>
+        string Description { get; }
+    }
+}