diff --git a/Hotel/HotelBusinessLogic/BusinessLogics/ConferenceBookingLogic.cs b/Hotel/HotelBusinessLogic/BusinessLogics/ConferenceBookingLogic.cs
new file mode 100644
index 0000000..c8d2e8e
--- /dev/null
+++ b/Hotel/HotelBusinessLogic/BusinessLogics/ConferenceBookingLogic.cs
@@ -0,0 +1,161 @@
+using HotelContracts.BindingModels;
+using HotelContracts.BusinessLogicsContracts;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+using Microsoft.Extensions.Logging;
+
+namespace HotelBusinessLogic.BusinessLogics
+{
+    public class ConferenceBookingLogic : IConferenceBookingLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IConferenceBookingStorage _conferenceBookingStorage;
+
+        public ConferenceBookingLogic(ILogger<ConferenceBookingLogic> logger, IConferenceBookingStorage conferenceBookingStorage)
+        {
+            _logger = logger;
+            _conferenceBookingStorage = conferenceBookingStorage;
+        }
+
+        public List<ConferenceBookingViewModel>? ReadList(ConferenceBookingSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Id:{ Id}", model?.Id);
+
+            var list = model == null ? _conferenceBookingStorage.GetFullList() : _conferenceBookingStorage.GetFilteredList(model);
+
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+
+            return list;
+        }
+
+        public ConferenceBookingViewModel? ReadElement(ConferenceBookingSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. Id:{Id}", model.Id);
+
+            var element = _conferenceBookingStorage.GetElement(model);
+
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+
+            return element;
+        }
+
+        public bool AddLunchToConferenceBooking(ConferenceBookingSearchModel model, ILunchModel lunch)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("AddLunchToConferenceBooking. NameHall:{NameHall}.Id:{ Id}", model.NameHall, model.Id);
+            var element = _conferenceBookingStorage.GetElement(model);
+
+            if (element == null)
+            {
+                _logger.LogWarning("AddLunchToConferenceBooking element not found");
+                return false;
+            }
+
+            _logger.LogInformation("AddLunchToConferenceBooking find. Id:{Id}", element.Id);
+
+            element.ConferenceBookingLunches[lunch.Id] = lunch;
+
+            _conferenceBookingStorage.Update(new()
+            {
+                Id = element.Id,
+                NameHall = element.NameHall,
+                BookingDate = element.BookingDate,
+                ConferenceId = element.ConferenceId,
+                HeadwaiterId = element.HeadwaiterId,
+                ConferenceBookingLunches = element.ConferenceBookingLunches
+            });
+
+            return true;
+        }
+
+        public bool Create(ConferenceBookingBindingModel model)
+        {
+            CheckModel(model);
+            model.ConferenceBookingLunches = new();
+
+            var result = _conferenceBookingStorage.Insert(model);
+
+            if (result == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Update(ConferenceBookingBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_conferenceBookingStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Delete(ConferenceBookingBindingModel model)
+        {
+            CheckModel(model, false);
+
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+
+            var result = _conferenceBookingStorage.Delete(model);
+
+            if (result == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        private void CheckModel(ConferenceBookingBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(model.NameHall))
+            {
+                throw new ArgumentNullException("Нет названия конференции", nameof(model.NameHall));
+            }
+
+            _logger.LogInformation("ConferenceBooking. Id: { Id}", model.Id);
+
+        }
+    }
+}
diff --git a/Hotel/HotelBusinessLogic/BusinessLogics/LunchLogic.cs b/Hotel/HotelBusinessLogic/BusinessLogics/LunchLogic.cs
new file mode 100644
index 0000000..0cb41dc
--- /dev/null
+++ b/Hotel/HotelBusinessLogic/BusinessLogics/LunchLogic.cs
@@ -0,0 +1,130 @@
+using HotelContracts.BindingModels;
+using HotelContracts.BusinessLogicsContracts;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace HotelBusinessLogic.BusinessLogics
+{
+    public class LunchLogic : ILunchLogic
+    {
+        private readonly ILogger _logger;
+        private readonly ILunchStorage _lunchStorage;
+
+        public LunchLogic(ILogger<LunchLogic> logger, ILunchStorage lunchStorage)
+        {
+            _logger = logger;
+            _lunchStorage = lunchStorage;
+        }
+
+        public List<LunchViewModel>? ReadList(LunchSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. LunchName:{LunchName}.Id:{ Id}", model?.LunchName, model?.Id);
+
+            var list = model == null ? _lunchStorage.GetFullList() : _lunchStorage.GetFilteredList(model);
+
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+
+            return list;
+        }
+
+        public LunchViewModel? ReadElement(LunchSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. LunchName:{LunchName}.Id:{Id}", model.LunchName, model.Id);
+
+            var element = _lunchStorage.GetElement(model);
+
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+
+            return element;
+        }
+
+        public bool Create(LunchBindingModel model)
+        {
+            CheckModel(model);
+
+            var result = _lunchStorage.Insert(model);
+
+            if (result == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Update(LunchBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_lunchStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Delete(LunchBindingModel model)
+        {
+            CheckModel(model, false);
+
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+
+            var result = _lunchStorage.Delete(model);
+
+            if (result == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        private void CheckModel(LunchBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(model.LunchName))
+            {
+                throw new ArgumentNullException("Нет имени обеда", nameof(model.LunchName));
+            }
+
+            if (model.LunchPrice < 0)
+            {
+                throw new ArgumentNullException("Стоимость обеда не может быть меньше 0", nameof(model.LunchPrice));
+            }
+
+            _logger.LogInformation("Lunch. LunchName:{LunchName}.LunchPrice:{ LunchPrice}. Id: { Id}", model.LunchName, model.LunchPrice, model.Id);
+        }
+    }
+}
diff --git a/Hotel/HotelBusinessLogic/BusinessLogics/RoomLogic.cs b/Hotel/HotelBusinessLogic/BusinessLogics/RoomLogic.cs
new file mode 100644
index 0000000..02c06c0
--- /dev/null
+++ b/Hotel/HotelBusinessLogic/BusinessLogics/RoomLogic.cs
@@ -0,0 +1,172 @@
+using HotelContracts.BindingModels;
+using HotelContracts.BusinessLogicsContracts;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+using Microsoft.Extensions.Logging;
+
+namespace HotelBusinessLogic.BusinessLogics
+{
+    public class RoomLogic : IRoomLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IRoomStorage _roomStorage;
+
+        public RoomLogic(ILogger<RoomLogic> logger, IRoomStorage roomStorage)
+        {
+            _logger = logger;
+            _roomStorage = roomStorage;
+        }
+
+        public List<RoomViewModel>? ReadList(RoomSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. RoomName:{RoomName}.Id:{ Id}", model?.RoomName, model?.Id);
+
+            var list = model == null ? _roomStorage.GetFullList() : _roomStorage.GetFilteredList(model);
+
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+
+            return list;
+        }
+
+        public RoomViewModel? ReadElement(RoomSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. RoomName:{RoomName}.Id:{Id}", model.RoomName, model.Id);
+
+            var element = _roomStorage.GetElement(model);
+
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+
+            return element;
+        }
+
+        public bool AddLunchToRoom(RoomSearchModel model, ILunchModel lunch)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("AddLunchToRoom. RoomName:{RoomName}.Id:{ Id}", model.RoomName, model.Id);
+            var element = _roomStorage.GetElement(model);
+
+            if (element == null)
+            {
+                _logger.LogWarning("AddLunchToRoom element not found");
+                return false;
+            }
+
+            _logger.LogInformation("AddLunchToRoom find. Id:{Id}", element.Id);
+
+            element.RoomLunches[lunch.Id] = lunch;
+
+            _roomStorage.Update(new()
+            {
+                Id = element.Id,
+                RoomName = element.RoomName,
+                RoomPrice = element.RoomPrice,
+                RoomFrame = element.RoomFrame,
+                MealPlanId = element.MealPlanId,
+                HeadwaiterId = element.HeadwaiterId,
+                RoomLunches = element.RoomLunches,
+            });
+
+            return true;
+        }
+
+        public bool Create(RoomBindingModel model)
+        {
+            CheckModel(model);
+            model.RoomLunches = new();
+
+            var result = _roomStorage.Insert(model);
+
+            if (result == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Update(RoomBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_roomStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Delete(RoomBindingModel model)
+        {
+            CheckModel(model, false);
+
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+
+            var result = _roomStorage.Delete(model);
+
+            if (result == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        private void CheckModel(RoomBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(model.RoomName))
+            {
+                throw new ArgumentNullException("Нет названия комнате", nameof(model.RoomName));
+            }
+
+
+            if (string.IsNullOrEmpty(model.RoomFrame))
+            {
+                throw new ArgumentNullException("Нет названия корпусу", nameof(model.RoomFrame));
+            }
+
+            if (model.RoomPrice < 0)
+            {
+                throw new ArgumentNullException("Стоимость комнаты не может быть меньше 0", nameof(model.RoomPrice));
+            }
+
+            _logger.LogInformation("Room. RoomName:{RoomName}.RoomFrame:{ RoomFrame}.RoomPrice:{ RoomPrice}. Id: { Id}", model.RoomName, model.RoomFrame, model.RoomPrice, model.Id);
+        }
+    }
+}