diff --git a/modules/ipc/apps/zenoh_topic_echo.cpp b/modules/ipc/apps/zenoh_topic_echo.cpp
index fd097fdb..45dfc5f1 100644
--- a/modules/ipc/apps/zenoh_topic_echo.cpp
+++ b/modules/ipc/apps/zenoh_topic_echo.cpp
@@ -27,10 +27,10 @@
 #include "hephaestus/ipc/zenoh/session.h"
 #include "hephaestus/serdes/dynamic_deserializer.h"
 #include "hephaestus/serdes/type_info.h"
-#include "hephaestus/types/type_formatting.h"
 #include "hephaestus/utils/exception.h"
 #include "hephaestus/utils/signal_handler.h"
 #include "hephaestus/utils/stack_trace.h"
+#include "hephaestus/utils/string/type_formatting.h"
 
 namespace {
 constexpr auto DEFAULT_MAX_ARRAY_LENGTH = 100;
@@ -95,7 +95,7 @@ class TopicEcho {
     truncateLongItems(msg_json, noarr_, max_array_length_);
     fmt::println("From: {}. Topic: {}\nSequence: {} | Timestamp: {}\n{}", metadata.sender_id, metadata.topic,
                  metadata.sequence_id,
-                 types::toString(std::chrono::time_point<std::chrono::system_clock>(
+                 utils::string::toString(std::chrono::time_point<std::chrono::system_clock>(
                      std::chrono::duration_cast<std::chrono::system_clock::duration>(metadata.timestamp))),
                  msg_json);
   }
diff --git a/modules/serdes/CMakeLists.txt b/modules/serdes/CMakeLists.txt
index 0712f55c..bfa5e2e0 100644
--- a/modules/serdes/CMakeLists.txt
+++ b/modules/serdes/CMakeLists.txt
@@ -19,6 +19,7 @@ set(SOURCES
     src/serdes.cpp
     src/type_info.cpp
     src/dynamic_deserializer.cpp
+    src/protobuf/buffers.cpp
     src/protobuf/dynamic_deserializer.cpp
     src/protobuf/buffers.cpp
     src/protobuf/protobuf.cpp
@@ -27,6 +28,7 @@ set(SOURCES
     include/hephaestus/serdes/dynamic_deserializer.h
     include/hephaestus/serdes/serdes.h
     include/hephaestus/serdes/type_info.h
+    include/hephaestus/serdes/protobuf/buffers.h
     include/hephaestus/serdes/protobuf/concepts.h
     include/hephaestus/serdes/protobuf/buffers.h
     include/hephaestus/serdes/protobuf/dynamic_deserializer.h
diff --git a/modules/types/CMakeLists.txt b/modules/types/CMakeLists.txt
index 87310e6e..9c30a540 100644
--- a/modules/types/CMakeLists.txt
+++ b/modules/types/CMakeLists.txt
@@ -13,14 +13,8 @@ find_package(magic_enum REQUIRED)
 find_package(range-v3 REQUIRED)
 
 # library sources
-set(SOURCES
-    src/bounds.cpp
-    src/dummy_type.cpp
-    src/type_formatting.cpp
-    README.md
-    include/hephaestus/types/bounds.h
-    include/hephaestus/types/dummy_type.h
-    include/hephaestus/types/type_formatting.h
+set(SOURCES src/bounds.cpp src/dummy_type.cpp README.md include/hephaestus/types/bounds.h
+            include/hephaestus/types/dummy_type.h
 )
 
 # library target
diff --git a/modules/types/src/dummy_type.cpp b/modules/types/src/dummy_type.cpp
index b9f08a0f..07cce712 100644
--- a/modules/types/src/dummy_type.cpp
+++ b/modules/types/src/dummy_type.cpp
@@ -11,7 +11,7 @@
 #include <magic_enum.hpp>
 
 #include "hephaestus/random/random_object_creator.h"
-#include "hephaestus/types/type_formatting.h"
+#include "hephaestus/utils/string/type_formatting.h"
 
 namespace heph::types {
 
@@ -54,12 +54,11 @@ auto DummyType::random(std::mt19937_64& mt) -> DummyType {
 }
 
 auto operator<<(std::ostream& os, const DummyType& dummy_type) -> std::ostream& {
-  return os << "DummyType{"
-            << "\n"
+  return os << "DummyType{\n"
             << "  dummy_primitives_type={" << dummy_type.dummy_primitives_type << "}\n"
             << "  dummy_enum=" << magic_enum::enum_name(dummy_type.dummy_enum) << "\n"
             << "  dummy_string=" << dummy_type.dummy_string << "\n"
-            << "  dummy_vector=" << toString(dummy_type.dummy_vector) << "\n"
+            << "  dummy_vector=" << utils::string::toString(dummy_type.dummy_vector) << "\n"
             << "}";
 }
 
diff --git a/modules/types/tests/CMakeLists.txt b/modules/types/tests/CMakeLists.txt
index 05f215c0..ed840707 100644
--- a/modules/types/tests/CMakeLists.txt
+++ b/modules/types/tests/CMakeLists.txt
@@ -11,8 +11,3 @@ define_module_test(
   NAME tests
   SOURCES tests.cpp
 )
-
-define_module_test(
-  NAME type_formatting_tests
-  SOURCES type_formatting_tests.cpp
-)
diff --git a/modules/utils/CMakeLists.txt b/modules/utils/CMakeLists.txt
index bb42442a..d67718cb 100644
--- a/modules/utils/CMakeLists.txt
+++ b/modules/utils/CMakeLists.txt
@@ -22,6 +22,7 @@ set(SOURCES
     src/filesystem/scoped_path.cpp
     src/string/string_literal.cpp
     src/string/string_utils.cpp
+    src/string/type_formatting.cpp
     src/timing/watchdog.cpp
     src/bit_flag.cpp
     src/concepts.cpp
@@ -35,6 +36,7 @@ set(SOURCES
     include/hephaestus/utils/filesystem/scoped_path.h
     include/hephaestus/utils/string/string_literal.h
     include/hephaestus/utils/string/string_utils.h
+    include/hephaestus/utils/string/type_formatting.h
     include/hephaestus/utils/timing/watchdog.h
     include/hephaestus/utils/bit_flag.h
     include/hephaestus/utils/concepts.h
diff --git a/modules/types/include/hephaestus/types/type_formatting.h b/modules/utils/include/hephaestus/utils/string/type_formatting.h
similarity index 95%
rename from modules/types/include/hephaestus/types/type_formatting.h
rename to modules/utils/include/hephaestus/utils/string/type_formatting.h
index 8e0b4a19..83e87da9 100644
--- a/modules/types/include/hephaestus/types/type_formatting.h
+++ b/modules/utils/include/hephaestus/utils/string/type_formatting.h
@@ -15,7 +15,7 @@
 
 #include "hephaestus/utils/concepts.h"
 
-namespace heph::types {
+namespace heph::utils::string {
 
 //=================================================================================================
 // Array and Vector
@@ -46,7 +46,8 @@ template <UnorderedMapType T>
   std::stringstream ss;
 
   for (const auto& [key, value] : umap) {
-    ss << "  Key: " << key << ", Value: " << value << '\n';
+    const std::string str = fmt::format("  Key: {}, Value: {}\n", key, value);
+    ss << str;
   }
 
   return ss.str();
@@ -86,4 +87,4 @@ template <ChronoSteadyClockType T>
   return fmt::format("{}d {:02}h:{:02}m:{:02}.{:09}s", days, hours, minutes, seconds, sub_seconds * SCALER);
 }
 
-};  // namespace heph::types
+};  // namespace heph::utils::string
diff --git a/modules/types/src/type_formatting.cpp b/modules/utils/src/string/type_formatting.cpp
similarity index 74%
rename from modules/types/src/type_formatting.cpp
rename to modules/utils/src/string/type_formatting.cpp
index d6559693..8c0c2a86 100644
--- a/modules/types/src/type_formatting.cpp
+++ b/modules/utils/src/string/type_formatting.cpp
@@ -2,4 +2,4 @@
 // Copyright (C) 2023-2024 HEPHAESTUS Contributors
 //=================================================================================================
 
-#include "hephaestus/types/type_formatting.h"  // NOLINT(misc-include-cleaner)
+#include "hephaestus/utils/string/type_formatting.h"  // NOLINT(misc-include-cleaner)
diff --git a/modules/utils/tests/CMakeLists.txt b/modules/utils/tests/CMakeLists.txt
index 15ff5abc..9f4a2b46 100644
--- a/modules/utils/tests/CMakeLists.txt
+++ b/modules/utils/tests/CMakeLists.txt
@@ -2,6 +2,13 @@
 # Copyright (C) 2023-2024 HEPHAESTUS Contributors
 # =================================================================================================
 
+define_module_test(
+  NAME bit_flag_tests
+  SOURCES bit_flag_tests.cpp
+  PUBLIC_INCLUDE_PATHS $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
+  PUBLIC_LINK_LIBS ""
+)
+
 define_module_test(
   NAME concepts_tests
   SOURCES concepts_tests.cpp
@@ -38,8 +45,8 @@ define_module_test(
 )
 
 define_module_test(
-  NAME bit_flag_tests
-  SOURCES bit_flag_tests.cpp
+  NAME type_formatting_tests
+  SOURCES type_formatting_tests.cpp
   PUBLIC_INCLUDE_PATHS $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
   PUBLIC_LINK_LIBS ""
 )
diff --git a/modules/types/tests/type_formatting_tests.cpp b/modules/utils/tests/type_formatting_tests.cpp
similarity index 97%
rename from modules/types/tests/type_formatting_tests.cpp
rename to modules/utils/tests/type_formatting_tests.cpp
index 88d82d16..72e612e3 100644
--- a/modules/types/tests/type_formatting_tests.cpp
+++ b/modules/utils/tests/type_formatting_tests.cpp
@@ -13,11 +13,11 @@
 #include <fmt/core.h>
 #include <gtest/gtest.h>
 
-#include "hephaestus/types/type_formatting.h"
+#include "hephaestus/utils/string/type_formatting.h"
 
 using namespace ::testing;  // NOLINT(google-build-using-namespace)
 
-namespace heph::types::tests {
+namespace heph::utils::string::tests {
 
 //=================================================================================================
 // Array
@@ -175,4 +175,4 @@ TEST(TypeFormattingTests, ChronoTimestampFormattingSystemClock) {
   ASSERT_EQ(str[19], '.');
 }
 
-}  // namespace heph::types::tests
+}  // namespace heph::utils::string::tests