diff --git a/include/rde/external_storer_interface.hpp b/include/rde/external_storer_interface.hpp
new file mode 100644
index 0000000..05a8616
--- /dev/null
+++ b/include/rde/external_storer_interface.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <string_view>
+
+namespace bios_bmc_smm_error_logger
+{
+namespace rde
+{
+
+/**
+ * @brief Base class for publishing data to ExternalStorer.
+ */
+class ExternalStorerInterface
+{
+  public:
+    virtual ~ExternalStorerInterface() = default;
+
+    /**
+     * @brief Publish JSON string to ExternalStorer.
+     *
+     * @param[in] jsonStr - a valid JSON string.
+     * @return true if successful.
+     */
+    virtual bool publishJson(std::string_view jsonStr) = 0;
+};
+
+} // namespace rde
+} // namespace bios_bmc_smm_error_logger