diff --git a/src/main/java/cz/fi/muni/pa165/flea/market/manager/domain/DomainService.java b/src/main/java/cz/fi/muni/pa165/flea/market/manager/domain/DomainService.java
new file mode 100644
index 0000000000000000000000000000000000000000..9376c423afb2511fd4ff23761f1a9a861d71b121
--- /dev/null
+++ b/src/main/java/cz/fi/muni/pa165/flea/market/manager/domain/DomainService.java
@@ -0,0 +1,56 @@
+package cz.fi.muni.pa165.flea.market.manager.domain;
+
+import lombok.NonNull;
+
+import java.util.List;
+
+/**
+ * Service interface for ENTITY with basic CRUD operations
+ *
+ * @param <ENTITY> entity for the service
+ *
+ * @author Michal Cizek
+ */
+public interface DomainService<ENTITY extends DomainEntity> {
+    /**
+     * Creates new entity.
+     *
+     * @param object entity to store in database
+     * @return created entity
+     * @throws NullPointerException if given object is null
+     */
+    ENTITY create(@NonNull ENTITY object);
+
+    /**
+     * Finds entity by id and returns it.
+     *
+     * @param id id of the entity to look for
+     * @return entity with given id
+     * @throws NullPointerException if given id is null
+     */
+    ENTITY findById(@NonNull String id);
+
+    /**
+     * Finds all entities.
+     *
+     * @return all stored entities
+     */
+    List<ENTITY> findAll();
+
+    /**
+     * Updates entity.
+     *
+     * @param object entity with new values to update
+     * @return updated entity
+     * @throws NullPointerException if given object is null
+     */
+    ENTITY update(@NonNull ENTITY object);
+
+    /**
+     * Deletes given entity.
+     *
+     * @param object entity to delete
+     * @throws NullPointerException if given object is null
+     */
+    void delete(@NonNull ENTITY object);
+}
diff --git a/src/main/java/cz/fi/muni/pa165/flea/market/manager/domain/DomainServiceImpl.java b/src/main/java/cz/fi/muni/pa165/flea/market/manager/domain/DomainServiceImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..30de34300a65a925b6f1db2ce7496fa7e85cf924
--- /dev/null
+++ b/src/main/java/cz/fi/muni/pa165/flea/market/manager/domain/DomainServiceImpl.java
@@ -0,0 +1,46 @@
+package cz.fi.muni.pa165.flea.market.manager.domain;
+
+import lombok.NonNull;
+
+import java.util.List;
+
+/**
+ * Implementation of {@link DomainService}
+ *
+ * @param <ENTITY> entity for the service
+ *
+ * @author Michal Cizek
+ */
+public abstract class DomainServiceImpl<ENTITY extends DomainEntity> implements DomainService<ENTITY> {
+
+    protected final DomainDao<ENTITY> dao;
+
+    public DomainServiceImpl(DomainDao<ENTITY> dao) {
+        this.dao = dao;
+    }
+
+    @Override
+    public ENTITY create(@NonNull ENTITY object) {
+        return dao.create(object);
+    }
+
+    @Override
+    public ENTITY findById(@NonNull String id) {
+        return dao.findById(id);
+    }
+
+    @Override
+    public List<ENTITY> findAll() {
+        return dao.findAll();
+    }
+
+    @Override
+    public ENTITY update(@NonNull ENTITY object) {
+        return dao.update(object);
+    }
+
+    @Override
+    public void delete(@NonNull ENTITY object) {
+        dao.delete(object);
+    }
+}