diff --git a/services/backup/CMakeLists.txt b/services/backup/CMakeLists.txt
--- a/services/backup/CMakeLists.txt
+++ b/services/backup/CMakeLists.txt
@@ -28,6 +28,7 @@
 file(GLOB_RECURSE SOURCE_CODE "./src/*.cpp")
 
 include_directories(
+  ./lib_src
   ./src
   ./src/grpc-client
   ./src/DatabaseEntities
diff --git a/services/blob/CMakeLists.txt b/services/blob/CMakeLists.txt
--- a/services/blob/CMakeLists.txt
+++ b/services/blob/CMakeLists.txt
@@ -29,6 +29,7 @@
 file(GLOB SOURCE_CODE "./src/*.cpp" "./src/**/*.cpp")
 
 include_directories(
+  ./lib_src
   ./src
   ./src/DatabaseEntities
   ./src/Reactors/
diff --git a/services/blob/src/DatabaseEntities/Item.h b/services/blob/src/DatabaseEntities/Item.h
deleted file mode 100644
--- a/services/blob/src/DatabaseEntities/Item.h
+++ /dev/null
@@ -1,49 +0,0 @@
-#pragma once
-
-#include <aws/core/Aws.h>
-#include <aws/dynamodb/DynamoDBClient.h>
-
-#include <memory>
-#include <string>
-
-namespace comm {
-namespace network {
-namespace database {
-
-typedef Aws::Map<Aws::String, Aws::DynamoDB::Model::AttributeValue>
-    AttributeValues;
-
-struct PrimaryKeyBase {
-  PrimaryKeyBase(const std::string partitionKey)
-      : partitionKey(partitionKey), sortKey(nullptr) {
-  }
-  PrimaryKeyBase(const std::string partitionKey, const std::string sortKey)
-      : partitionKey(partitionKey),
-        sortKey(std::make_unique<std::string>(sortKey)) {
-  }
-
-  const std::string partitionKey;
-  std::unique_ptr<std::string> sortKey;
-};
-
-struct PrimaryKey : PrimaryKeyBase {
-  using PrimaryKeyBase::PrimaryKeyBase;
-};
-
-struct PrimaryKeyValue : PrimaryKeyBase {
-  using PrimaryKeyBase::PrimaryKeyBase;
-};
-
-class Item {
-  virtual void validate() const = 0;
-
-public:
-  virtual std::string getTableName() const = 0;
-  virtual PrimaryKey getPrimaryKey() const = 0;
-  virtual PrimaryKeyValue getPrimaryKeyValue() const = 0;
-  virtual void assignItemFromDatabase(const AttributeValues &itemFromDB) = 0;
-};
-
-} // namespace database
-} // namespace network
-} // namespace comm
diff --git a/services/backup/src/DatabaseEntities/Item.h b/services/lib/lib_src/Item.h
rename from services/backup/src/DatabaseEntities/Item.h
rename to services/lib/lib_src/Item.h