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diff --git a/src/lib/dhcpsrv/cfg_multi_threading.h b/src/lib/dhcpsrv/cfg_multi_threading.h
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+++ b/src/lib/dhcpsrv/cfg_multi_threading.h
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+// Copyright (C) 2020-2023 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef CFG_MULTI_THREADING_H
+#define CFG_MULTI_THREADING_H
+
+#include <cc/data.h>
+
+namespace isc {
+namespace dhcp {
+
+/// @brief Utility class to apply multi threading configurations
+class CfgMultiThreading {
+public:
+
+    /// @brief apply multi threading configuration
+    ///
+    /// @param value The multi-threading configuration
+    static void apply(data::ConstElementPtr value);
+
+    /// @brief Extract multi-threading parameters from a given configuration.
+    ///
+    /// If the configuration does not contain the enable parameter,
+    /// multi-threading is disabled. This is very useful as a default value for
+    /// unit tests, so that they are kept simple, and that they can enable
+    /// multi-threading on their own if it is in their scope to test MT.
+    ///
+    /// @param[in] value The multi-threading configuration
+    /// @param[out] enabled The enabled flag
+    /// @param[out] thread_count The thread count
+    /// @param[out] queue_size The queue size
+    static void extract(data::ConstElementPtr value, bool& enabled,
+                        uint32_t& thread_count, uint32_t& queue_size);
+};
+
+}  // namespace dhcp
+}  // namespace isc
+
+#endif // CFG_MULTI_THREADING_H