diff --git a/.idea/dictionaries/max.xml b/.idea/dictionaries/max.xml
new file mode 100644
index 0000000..81b3e8d
--- /dev/null
+++ b/.idea/dictionaries/max.xml
@@ -0,0 +1,3 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="max" />
+</component>
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..75d6754
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+## Backend для приложения "Автоматизация работы библиотеки"
+
+### Ограничения
+
+Поскольку аутентификация и авторизация не реализованы, данное приложение можно использовать только в ограниченной среде (например внутри docker контейнера).
+
diff --git a/pom.xml b/pom.xml
index 39ad98e..c464783 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,19 +37,6 @@
 			<groupId>io.quarkus</groupId>
 			<artifactId>quarkus-resteasy-jsonb</artifactId>
 		</dependency>
-		<dependency>
-			<groupId>io.quarkus</groupId>
-			<artifactId>quarkus-arc</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>io.quarkus</groupId>
-			<artifactId>quarkus-resteasy</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>io.quarkus</groupId>
-			<artifactId>quarkus-junit5</artifactId>
-			<scope>test</scope>
-		</dependency>
 		<dependency>
 			<groupId>io.rest-assured</groupId>
 			<artifactId>rest-assured</artifactId>
@@ -70,6 +57,12 @@
 			<artifactId>validation-api</artifactId>
 			<version>2.0.1.Final</version>
 		</dependency>
+		<dependency>
+			<groupId>com.google.inject</groupId>
+			<artifactId>guice</artifactId>
+			<version>7.0.0</version>
+		</dependency>
+
 	</dependencies>
 
 	<build>
diff --git a/src/main/java/ru/cft/booklib/application/AppModule.java b/src/main/java/ru/cft/booklib/application/AppModule.java
new file mode 100644
index 0000000..5990bc2
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/application/AppModule.java
@@ -0,0 +1,20 @@
+package ru.cft.booklib.application;
+
+import com.google.inject.AbstractModule;
+import ru.cft.booklib.service.BooksService;
+import ru.cft.booklib.service.ReadersService;
+import ru.cft.booklib.service.TransactionsService;
+import ru.cft.booklib.service.impl.BooksServiceImpl;
+import ru.cft.booklib.service.impl.ReadersServiceImpl;
+import ru.cft.booklib.service.impl.TransactionsServiceImpl;
+
+/** Модуль внедрения зависимостей. */
+public class AppModule extends AbstractModule {
+	@Override
+	protected void configure() {
+		// Инициализируем сервисы.
+		bind(BooksService.class).to(BooksServiceImpl.class);
+		bind(ReadersService.class).to(ReadersServiceImpl.class);
+		bind(TransactionsService.class).to(TransactionsServiceImpl.class);
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/ru/cft/booklib/application/InjectionInitializer.java b/src/main/java/ru/cft/booklib/application/InjectionInitializer.java
new file mode 100644
index 0000000..b63893b
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/application/InjectionInitializer.java
@@ -0,0 +1,13 @@
+package ru.cft.booklib.application;
+
+import com.google.inject.Guice;
+import com.google.inject.Injector;
+
+/** Добавление компонентов к контейнеру внедрения зависимостей. */
+public class InjectionInitializer {
+
+	/** Инициализация внедрения зависимостей. */
+	public static void initDI() {
+		Guice.createInjector(new AppModule());
+	}
+}
diff --git a/src/main/java/ru/cft/booklib/Main.java b/src/main/java/ru/cft/booklib/application/Main.java
similarity index 76%
rename from src/main/java/ru/cft/booklib/Main.java
rename to src/main/java/ru/cft/booklib/application/Main.java
index 269ed63..1676047 100644
--- a/src/main/java/ru/cft/booklib/Main.java
+++ b/src/main/java/ru/cft/booklib/application/Main.java
@@ -1,9 +1,10 @@
-package ru.cft.booklib;
+package ru.cft.booklib.application;
 
 import io.quarkus.runtime.Quarkus;
 import io.quarkus.runtime.QuarkusApplication;
 import io.quarkus.runtime.annotations.QuarkusMain;
 
+/** Класс для запуска приложения в IDE. */
 @QuarkusMain
 public class Main {
 	public static void main(String... args) {
@@ -15,9 +16,10 @@ public class Main {
 	}
 
 	public static class MyApp implements QuarkusApplication {
-
 		@Override
 		public int run(String... args){
+			InjectionInitializer.initDI();
+
 			Quarkus.waitForExit();
 			return 0;
 		}
diff --git a/src/main/java/ru/cft/booklib/controller/impl/BooksApiImpl.java b/src/main/java/ru/cft/booklib/controller/impl/BooksApiImpl.java
index b303d95..dc4e052 100644
--- a/src/main/java/ru/cft/booklib/controller/impl/BooksApiImpl.java
+++ b/src/main/java/ru/cft/booklib/controller/impl/BooksApiImpl.java
@@ -1,12 +1,35 @@
 package ru.cft.booklib.controller.impl;
 
+import com.google.inject.Inject;
+import com.google.inject.Provider;
 import ru.cft.booklib.controller.BooksApi;
 import ru.cft.booklib.model.Book;
 import ru.cft.booklib.model.BookCreate;
+import ru.cft.booklib.service.BooksService;
 
 import java.util.List;
 
 public class BooksApiImpl implements BooksApi {
+	// /*
+	private final Provider<BooksService> booksService;
+
+	@Inject
+	public BooksApiImpl(Provider<BooksService> booksService) {
+		this.booksService = booksService;
+	}
+
+	@Override
+	public Book bookPost(BookCreate bookCreate) {
+		return booksService.get().addBook(bookCreate);
+	}
+
+	@Override
+	public List<Book> booksGet() {
+		return booksService.get().getBooks();
+	}
+	// */
+
+	/*
 	@Override
 	public Book bookPost(BookCreate bookCreate) {
 		return null;
@@ -20,4 +43,5 @@ public class BooksApiImpl implements BooksApi {
 
 		return List.of(book);
 	}
-}
+	*/
+}
\ No newline at end of file
diff --git a/src/main/java/ru/cft/booklib/service/BooksService.java b/src/main/java/ru/cft/booklib/service/BooksService.java
new file mode 100644
index 0000000..0a633f6
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/service/BooksService.java
@@ -0,0 +1,15 @@
+package ru.cft.booklib.service;
+
+import ru.cft.booklib.model.Book;
+import ru.cft.booklib.model.BookCreate;
+
+import java.util.List;
+
+/** Сервис по работе с книгами. */
+public interface BooksService {
+	/** Добавляет книгу в библиотеку. */
+	Book addBook(BookCreate bookCreate);
+
+	/** Возвращает список книг библиотеки. */
+	List<Book> getBooks();
+}
diff --git a/src/main/java/ru/cft/booklib/service/ReadersService.java b/src/main/java/ru/cft/booklib/service/ReadersService.java
new file mode 100644
index 0000000..e994b23
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/service/ReadersService.java
@@ -0,0 +1,5 @@
+package ru.cft.booklib.service;
+
+/** Сервис по работе с читателями. */
+public interface ReadersService {
+}
diff --git a/src/main/java/ru/cft/booklib/service/TransactionsService.java b/src/main/java/ru/cft/booklib/service/TransactionsService.java
new file mode 100644
index 0000000..7c17e43
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/service/TransactionsService.java
@@ -0,0 +1,5 @@
+package ru.cft.booklib.service;
+
+/** Сервис по выдаче книг читателям. */
+public interface TransactionsService {
+}
diff --git a/src/main/java/ru/cft/booklib/service/impl/BooksServiceImpl.java b/src/main/java/ru/cft/booklib/service/impl/BooksServiceImpl.java
new file mode 100644
index 0000000..0d5db9c
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/service/impl/BooksServiceImpl.java
@@ -0,0 +1,45 @@
+package ru.cft.booklib.service.impl;
+
+import ru.cft.booklib.model.Book;
+import ru.cft.booklib.model.BookCreate;
+import ru.cft.booklib.service.BooksService;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class BooksServiceImpl implements BooksService {
+	/** ^^^ Удалить после реализации репозитория. */
+	private static final ConcurrentHashMap<Integer, Book> books = new ConcurrentHashMap<>();
+
+	private static boolean isInit = false;
+	private static void init() {
+		if(isInit)
+			return;
+
+		isInit = true;
+		Book book = new Book();
+		book.id(1);
+		book.title("Java для начинающих");
+		book.authors(List.of("Иванов", "Петров"));
+		books.put(1, book);
+	}
+
+	@Override
+	public Book addBook(BookCreate bookCreate) {
+		Book book = new Book();
+
+		book.setId(books.size() + 1);
+		book.setTitle(bookCreate.getTitle());
+		book.setAuthors(bookCreate.getAuthors());
+
+		books.put(book.getId(), book);
+		return book;
+	}
+
+	@Override
+	public List<Book> getBooks() {
+		init();
+		return new ArrayList<>(books.values());
+	}
+}
diff --git a/src/main/java/ru/cft/booklib/service/impl/ReadersServiceImpl.java b/src/main/java/ru/cft/booklib/service/impl/ReadersServiceImpl.java
new file mode 100644
index 0000000..f9c2a1a
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/service/impl/ReadersServiceImpl.java
@@ -0,0 +1,7 @@
+package ru.cft.booklib.service.impl;
+
+import ru.cft.booklib.service.ReadersService;
+
+public class ReadersServiceImpl implements ReadersService {
+
+}
diff --git a/src/main/java/ru/cft/booklib/service/impl/TransactionsServiceImpl.java b/src/main/java/ru/cft/booklib/service/impl/TransactionsServiceImpl.java
new file mode 100644
index 0000000..e266520
--- /dev/null
+++ b/src/main/java/ru/cft/booklib/service/impl/TransactionsServiceImpl.java
@@ -0,0 +1,6 @@
+package ru.cft.booklib.service.impl;
+
+import ru.cft.booklib.service.TransactionsService;
+
+public class TransactionsServiceImpl implements TransactionsService {
+}