diff --git a/esphome/components/api/user_services.h b/esphome/components/api/user_services.h
index 673bcf5693..2f94739287 100644
--- a/esphome/components/api/user_services.h
+++ b/esphome/components/api/user_services.h
@@ -15,6 +15,8 @@ class UserServiceDescriptor {
   virtual ListEntitiesServicesResponse encode_list_service_response() = 0;
 
   virtual bool execute_service(const ExecuteServiceRequest &req) = 0;
+
+  bool is_internal() { return false; }
 };
 
 template<typename T> T get_execute_arg_value(const ExecuteServiceArgument &arg);
diff --git a/esphome/core/component_iterator.cpp b/esphome/core/component_iterator.cpp
index da593340c1..3e708e2d00 100644
--- a/esphome/core/component_iterator.cpp
+++ b/esphome/core/component_iterator.cpp
@@ -14,373 +14,190 @@ void ComponentIterator::begin(bool include_internal) {
   this->at_ = 0;
   this->include_internal_ = include_internal;
 }
+
+template<typename Entity>
+void ComponentIterator::process_entity_(const std::vector<Entity *> &items,
+                                        bool (ComponentIterator::*on_item)(Entity *)) {
+  if (this->at_ >= items.size()) {
+    advance_platform_();
+  } else {
+    Entity *entity = items[this->at_];
+    if (entity->is_internal() && !this->include_internal_) {
+      this->at_++;
+    } else {
+      if ((this->*on_item)(entity)) {
+        this->at_++;
+      }
+    }
+  }
+}
+
+void ComponentIterator::advance_platform_() {
+  this->state_ = static_cast<IteratorState>(static_cast<uint32_t>(this->state_) + 1);
+  this->at_ = 0;
+}
+
 void ComponentIterator::advance() {
-  bool advance_platform = false;
-  bool success = true;
   switch (this->state_) {
     case IteratorState::NONE:
       // not started
       return;
     case IteratorState::BEGIN:
       if (this->on_begin()) {
-        advance_platform = true;
-      } else {
-        return;
+        advance_platform_();
       }
       break;
+
 #ifdef USE_BINARY_SENSOR
     case IteratorState::BINARY_SENSOR:
-      if (this->at_ >= App.get_binary_sensors().size()) {
-        advance_platform = true;
-      } else {
-        auto *binary_sensor = App.get_binary_sensors()[this->at_];
-        if (binary_sensor->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_binary_sensor(binary_sensor);
-        }
-      }
+      process_entity_(App.get_binary_sensors(), &ComponentIterator::on_binary_sensor);
       break;
 #endif
+
 #ifdef USE_COVER
     case IteratorState::COVER:
-      if (this->at_ >= App.get_covers().size()) {
-        advance_platform = true;
-      } else {
-        auto *cover = App.get_covers()[this->at_];
-        if (cover->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_cover(cover);
-        }
-      }
+      process_entity_(App.get_covers(), &ComponentIterator::on_cover);
       break;
 #endif
+
 #ifdef USE_FAN
     case IteratorState::FAN:
-      if (this->at_ >= App.get_fans().size()) {
-        advance_platform = true;
-      } else {
-        auto *fan = App.get_fans()[this->at_];
-        if (fan->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_fan(fan);
-        }
-      }
+      process_entity_(App.get_fans(), &ComponentIterator::on_fan);
       break;
 #endif
+
 #ifdef USE_LIGHT
     case IteratorState::LIGHT:
-      if (this->at_ >= App.get_lights().size()) {
-        advance_platform = true;
-      } else {
-        auto *light = App.get_lights()[this->at_];
-        if (light->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_light(light);
-        }
-      }
+      process_entity_(App.get_lights(), &ComponentIterator::on_light);
       break;
 #endif
+
 #ifdef USE_SENSOR
     case IteratorState::SENSOR:
-      if (this->at_ >= App.get_sensors().size()) {
-        advance_platform = true;
-      } else {
-        auto *sensor = App.get_sensors()[this->at_];
-        if (sensor->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_sensor(sensor);
-        }
-      }
+      process_entity_(App.get_sensors(), &ComponentIterator::on_sensor);
       break;
 #endif
+
 #ifdef USE_SWITCH
     case IteratorState::SWITCH:
-      if (this->at_ >= App.get_switches().size()) {
-        advance_platform = true;
-      } else {
-        auto *a_switch = App.get_switches()[this->at_];
-        if (a_switch->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_switch(a_switch);
-        }
-      }
+      process_entity_(App.get_switches(), &ComponentIterator::on_switch);
       break;
 #endif
+
 #ifdef USE_BUTTON
     case IteratorState::BUTTON:
-      if (this->at_ >= App.get_buttons().size()) {
-        advance_platform = true;
-      } else {
-        auto *button = App.get_buttons()[this->at_];
-        if (button->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_button(button);
-        }
-      }
+      process_entity_(App.get_buttons(), &ComponentIterator::on_button);
       break;
 #endif
+
 #ifdef USE_TEXT_SENSOR
     case IteratorState::TEXT_SENSOR:
-      if (this->at_ >= App.get_text_sensors().size()) {
-        advance_platform = true;
-      } else {
-        auto *text_sensor = App.get_text_sensors()[this->at_];
-        if (text_sensor->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_text_sensor(text_sensor);
-        }
-      }
+      process_entity_(App.get_text_sensors(), &ComponentIterator::on_text_sensor);
       break;
 #endif
+
 #ifdef USE_API
-    case IteratorState ::SERVICE:
-      if (this->at_ >= api::global_api_server->get_user_services().size()) {
-        advance_platform = true;
-      } else {
-        auto *service = api::global_api_server->get_user_services()[this->at_];
-        success = this->on_service(service);
-      }
+    case IteratorState::SERVICE:
+      process_entity_(api::global_api_server->get_user_services(), &ComponentIterator::on_service);
       break;
 #endif
+
 #ifdef USE_ESP32_CAMERA
-    case IteratorState::CAMERA:
-      if (esp32_camera::global_esp32_camera == nullptr) {
-        advance_platform = true;
-      } else {
-        if (esp32_camera::global_esp32_camera->is_internal() && !this->include_internal_) {
-          advance_platform = success = true;
-          break;
-        } else {
-          advance_platform = success = this->on_camera(esp32_camera::global_esp32_camera);
-        }
+    case IteratorState::CAMERA: {
+      std::vector<esp32_camera::ESP32Camera *> cameras;
+      if (esp32_camera::global_esp32_camera) {
+        cameras.push_back(esp32_camera::global_esp32_camera);
       }
-      break;
+      process_entity_(cameras, &ComponentIterator::on_camera);
+    } break;
 #endif
+
 #ifdef USE_CLIMATE
     case IteratorState::CLIMATE:
-      if (this->at_ >= App.get_climates().size()) {
-        advance_platform = true;
-      } else {
-        auto *climate = App.get_climates()[this->at_];
-        if (climate->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_climate(climate);
-        }
-      }
+      process_entity_(App.get_climates(), &ComponentIterator::on_climate);
       break;
 #endif
+
 #ifdef USE_NUMBER
     case IteratorState::NUMBER:
-      if (this->at_ >= App.get_numbers().size()) {
-        advance_platform = true;
-      } else {
-        auto *number = App.get_numbers()[this->at_];
-        if (number->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_number(number);
-        }
-      }
+      process_entity_(App.get_numbers(), &ComponentIterator::on_number);
       break;
 #endif
+
 #ifdef USE_DATETIME_DATE
     case IteratorState::DATETIME_DATE:
-      if (this->at_ >= App.get_dates().size()) {
-        advance_platform = true;
-      } else {
-        auto *date = App.get_dates()[this->at_];
-        if (date->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_date(date);
-        }
-      }
+      process_entity_(App.get_dates(), &ComponentIterator::on_date);
       break;
 #endif
+
 #ifdef USE_DATETIME_TIME
     case IteratorState::DATETIME_TIME:
-      if (this->at_ >= App.get_times().size()) {
-        advance_platform = true;
-      } else {
-        auto *time = App.get_times()[this->at_];
-        if (time->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_time(time);
-        }
-      }
+      process_entity_(App.get_times(), &ComponentIterator::on_time);
       break;
 #endif
+
 #ifdef USE_DATETIME_DATETIME
     case IteratorState::DATETIME_DATETIME:
-      if (this->at_ >= App.get_datetimes().size()) {
-        advance_platform = true;
-      } else {
-        auto *datetime = App.get_datetimes()[this->at_];
-        if (datetime->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_datetime(datetime);
-        }
-      }
+      process_entity_(App.get_datetimes(), &ComponentIterator::on_datetime);
       break;
 #endif
+
 #ifdef USE_TEXT
     case IteratorState::TEXT:
-      if (this->at_ >= App.get_texts().size()) {
-        advance_platform = true;
-      } else {
-        auto *text = App.get_texts()[this->at_];
-        if (text->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_text(text);
-        }
-      }
+      process_entity_(App.get_texts(), &ComponentIterator::on_text);
       break;
 #endif
+
 #ifdef USE_SELECT
     case IteratorState::SELECT:
-      if (this->at_ >= App.get_selects().size()) {
-        advance_platform = true;
-      } else {
-        auto *select = App.get_selects()[this->at_];
-        if (select->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_select(select);
-        }
-      }
+      process_entity_(App.get_selects(), &ComponentIterator::on_select);
       break;
 #endif
+
 #ifdef USE_LOCK
     case IteratorState::LOCK:
-      if (this->at_ >= App.get_locks().size()) {
-        advance_platform = true;
-      } else {
-        auto *a_lock = App.get_locks()[this->at_];
-        if (a_lock->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_lock(a_lock);
-        }
-      }
+      process_entity_(App.get_locks(), &ComponentIterator::on_lock);
       break;
 #endif
+
 #ifdef USE_VALVE
     case IteratorState::VALVE:
-      if (this->at_ >= App.get_valves().size()) {
-        advance_platform = true;
-      } else {
-        auto *valve = App.get_valves()[this->at_];
-        if (valve->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_valve(valve);
-        }
-      }
+      process_entity_(App.get_valves(), &ComponentIterator::on_valve);
       break;
 #endif
+
 #ifdef USE_MEDIA_PLAYER
     case IteratorState::MEDIA_PLAYER:
-      if (this->at_ >= App.get_media_players().size()) {
-        advance_platform = true;
-      } else {
-        auto *media_player = App.get_media_players()[this->at_];
-        if (media_player->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_media_player(media_player);
-        }
-      }
+      process_entity_(App.get_media_players(), &ComponentIterator::on_media_player);
       break;
 #endif
+
 #ifdef USE_ALARM_CONTROL_PANEL
     case IteratorState::ALARM_CONTROL_PANEL:
-      if (this->at_ >= App.get_alarm_control_panels().size()) {
-        advance_platform = true;
-      } else {
-        auto *a_alarm_control_panel = App.get_alarm_control_panels()[this->at_];
-        if (a_alarm_control_panel->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_alarm_control_panel(a_alarm_control_panel);
-        }
-      }
+      process_entity_(App.get_alarm_control_panels(), &ComponentIterator::on_alarm_control_panel);
       break;
 #endif
+
 #ifdef USE_EVENT
     case IteratorState::EVENT:
-      if (this->at_ >= App.get_events().size()) {
-        advance_platform = true;
-      } else {
-        auto *event = App.get_events()[this->at_];
-        if (event->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_event(event);
-        }
-      }
+      process_entity_(App.get_events(), &ComponentIterator::on_event);
       break;
 #endif
+
 #ifdef USE_UPDATE
     case IteratorState::UPDATE:
-      if (this->at_ >= App.get_updates().size()) {
-        advance_platform = true;
-      } else {
-        auto *update = App.get_updates()[this->at_];
-        if (update->is_internal() && !this->include_internal_) {
-          success = true;
-          break;
-        } else {
-          success = this->on_update(update);
-        }
-      }
+      process_entity_(App.get_updates(), &ComponentIterator::on_update);
       break;
 #endif
+
     case IteratorState::MAX:
       if (this->on_end()) {
         this->state_ = IteratorState::NONE;
       }
       return;
   }
-
-  if (advance_platform) {
-    this->state_ = static_cast<IteratorState>(static_cast<uint32_t>(this->state_) + 1);
-    this->at_ = 0;
-  } else if (success) {
-    this->at_++;
-  }
 }
+
 bool ComponentIterator::on_end() { return true; }
 bool ComponentIterator::on_begin() { return true; }
 #ifdef USE_API
diff --git a/esphome/core/component_iterator.h b/esphome/core/component_iterator.h
index 9e187f6c57..6898125c9c 100644
--- a/esphome/core/component_iterator.h
+++ b/esphome/core/component_iterator.h
@@ -169,6 +169,10 @@ class ComponentIterator {
   } state_{IteratorState::NONE};
   size_t at_{0};
   bool include_internal_{false};
+
+  template<typename Entity>
+  void process_entity_(const std::vector<Entity *> &items, bool (ComponentIterator::*on_item)(Entity *));
+  void advance_platform_();
 };
 
 }  // namespace esphome