diff --git a/src/entity_manager/utils.hpp b/src/entity_manager/utils.hpp
new file mode 100644
index 0000000..ac72c80
--- /dev/null
+++ b/src/entity_manager/utils.hpp
@@ -0,0 +1,50 @@
+#pragma once
+
+#include <boost/asio/io_context.hpp>
+#include <boost/container/flat_map.hpp>
+#include <nlohmann/json.hpp>
+#include <sdbusplus/asio/connection.hpp>
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+extern boost::asio::io_context io;
+
+using DBusValueVariant =
+    std::variant<std::string, int64_t, uint64_t, double, int32_t, uint32_t,
+                 int16_t, uint16_t, uint8_t, bool, std::vector<uint8_t>>;
+using DBusInterface = boost::container::flat_map<std::string, DBusValueVariant>;
+using DBusObject = boost::container::flat_map<std::string, DBusInterface>;
+
+constexpr const char* configurationOutDir = "/var/configuration/";
+constexpr const char* versionHashFile = "/var/configuration/version";
+constexpr const char* versionFile = "/etc/os-release";
+
+namespace em_utils
+{
+
+namespace properties
+{
+constexpr const char* interface = "org.freedesktop.DBus.Properties";
+constexpr const char* get = "Get";
+} // namespace properties
+
+namespace power
+{
+const static constexpr char* busname = "xyz.openbmc_project.State.Host";
+const static constexpr char* interface = "xyz.openbmc_project.State.Host";
+const static constexpr char* path = "/xyz/openbmc_project/state/host0";
+const static constexpr char* property = "CurrentHostState";
+} // namespace power
+
+bool isPowerOn();
+void setupPowerMatch(const std::shared_ptr<sdbusplus::asio::connection>& conn);
+bool fwVersionIsSame();
+
+std::optional<std::string> templateCharReplace(
+    nlohmann::json::iterator& keyPair, const DBusObject& object, size_t index,
+    const std::optional<std::string>& replaceStr = std::nullopt);
+
+std::optional<std::string> templateCharReplace(
+    nlohmann::json::iterator& keyPair, const DBusInterface& interface,
+    size_t index, const std::optional<std::string>& replaceStr = std::nullopt);
+
+} // namespace em_utils