diff --git a/ubi/item_updater_ubi.hpp b/ubi/item_updater_ubi.hpp
new file mode 100644
index 0000000..af330a8
--- /dev/null
+++ b/ubi/item_updater_ubi.hpp
@@ -0,0 +1,85 @@
+#pragma once
+
+#include "item_updater.hpp"
+
+namespace openpower
+{
+namespace software
+{
+namespace updater
+{
+
+/** @class ItemUpdaterUbi
+ *  @brief Manages the activation of the host version items for ubi layout
+ */
+class ItemUpdaterUbi : public ItemUpdater
+{
+  public:
+    ItemUpdaterUbi(sdbusplus::bus::bus& bus, const std::string& path) :
+        ItemUpdater(bus, path)
+    {
+        processPNORImage();
+        gardReset = std::make_unique<GardReset>(bus, GARD_PATH);
+        volatileEnable = std::make_unique<ObjectEnable>(bus, volatilePath);
+
+        // Emit deferred signal.
+        emit_object_added();
+    }
+    virtual ~ItemUpdaterUbi() = default;
+
+    void freePriority(uint8_t value, const std::string& versionId) override;
+
+    bool isLowestPriority(uint8_t value) override;
+
+    void processPNORImage() override;
+
+    bool erase(std::string entryId) override;
+
+    void deleteAll() override;
+
+    void freeSpace() override;
+
+    bool isVersionFunctional(const std::string& versionId) override;
+
+  private:
+    /** @brief Callback function for Software.Version match.
+     *  @details Creates an Activation D-Bus object.
+     *
+     * @param[in]  msg       - Data associated with subscribed signal
+     */
+    void createActivation(sdbusplus::message::message& msg) override;
+
+    /** @brief Host factory reset - clears PNOR partitions for each
+     * Activation D-Bus object */
+    void reset() override;
+
+    /**
+     * @brief Validates the presence of SquashFS image in the image dir.
+     *
+     * @param[in]  filePath - The path to the SquashFS image.
+     * @param[out] result    - 0 --> if validation was successful
+     *                       - -1--> Otherwise
+     */
+    static int validateSquashFSImage(const std::string& filePath);
+
+    /** @brief Clears read only PNOR partition for
+     *  given Activation D-Bus object
+     *
+     * @param[in]  versionId - The id of the ro partition to remove.
+     */
+    void removeReadOnlyPartition(std::string versionId);
+
+    /** @brief Clears read write PNOR partition for
+     *  given Activation D-Bus object
+     *
+     *  @param[in]  versionId - The id of the rw partition to remove.
+     */
+    void removeReadWritePartition(std::string versionId);
+
+    /** @brief Clears preserved PNOR partition */
+    void removePreservedPartition();
+};
+
+} // namespace updater
+} // namespace software
+} // namespace openpower