diff --git a/README.md b/README.md
index 5434a06..52f12f1 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,99 @@
-# webank-OnlineBanking
\ No newline at end of file
+# Webank Online Banking System
+###  An Online banking system middleware service
+## Table of Contents
+- [Project Overview](#project-overview)
+- [Features](#features)
+- [Technologies Used](#technologies-used)
+- [Prerequisites](#prerequisites)
+- [Installation Instructions](#installation-instructions)
+- [Usage](#usage)
+- [Project Documentation](#project-documentation)
+- [Development and Contribution](#development-and-contribution)
+- [License](#license)
+- [Contact Information](#contact-information)
+- [Acknowledgements](#acknowledgements)
+
+---
+
+## Project Overview
+
+The **Webank Online Banking System** is a middleware service designed to connect the frontend applications with a core banking system, providing a seamless online banking experience for users. The system consists of various modules to manage key functionalities such as user registration, account management, OTP verification, and access control. 
+
+### Key Modules
+- **OBS (Online Banking Service)**: Orchestrates requests for registration and OTP verification, forwarding them to the appropriate backend modules.
+- **PRS (Personal Registration Service)**: Manages user registration and OTP verification.
+- **DAS (Deposit Account Service)**: Handles account creation and balance management.
+- **AAS (Account Access Service)**: Manages account access and authorization.
+- **SMS Gateway**: Sends OTPs to users for verification purposes.
+
+## Features
+- **User Registration**: Users can register by providing their phone numbers and public keys.
+- **OTP Verification**: Secure one-time passwords are sent to users’ phones to verify identity.
+- **Account Management**: Once registration is complete, users can create bank accounts, check balances, and view transaction histories.
+- **Scalable Microservices Architecture**: Each service is designed as an independent microservice, allowing for modularity and scalability.
+
+## Technologies Used
+- **Backend**: Spring Boot for the OBS, PRS, DAS, and AAS modules.
+- **Database**: PostgreSQL (or any preferred database system) for secure data storage.
+- **API Documentation**: OpenAPI for standardized API documentation.
+- **Messaging and SMS**: Integrated SMS gateway for OTPs.
+
+## Prerequisites
+- **Java 11+**: Required to run the Spring Boot applications.
+- **Maven**: Used for project dependency management.
+- **Docker** (optional): For containerization and easier deployment.
+- **PostgreSQL**: As the primary database for storing user and account data.
+
+## Installation Instructions
+1. **Clone the Repository**:
+    ```bash
+    git clone https://github.com/yourusername/webank-online-banking-system.git
+    cd webank-online-banking-system
+    ```
+2. **Run Database Migration**:
+    - Ensure PostgreSQL is running and create necessary databases and tables (migration scripts are included in the `db/migrations` folder).
+
+3. **Build and Run Services**:
+    ```bash
+    mvn clean install
+    mvn spring-boot:run
+    ```
+
+5. **Access API Documentation**:
+    - The OpenAPI documentation will be available at `http://localhost:8080/swagger-ui.html` (or the port specified for each module).
+
+## Usage
+- **User Registration**:
+    - Make a `POST` request to `/register` with `phoneNumber` and `publicKey`.
+    - Receive an OTP on the provided phone number.
+- **OTP Verification**:
+    - Verify OTP by making a `POST` request to `/verify-otp` with the OTP and public key.
+- **Account Management**:
+    - Access endpoints for balance inquiries, transfers, and account details.
+
+For a detailed guide on using each endpoint, refer to the [API Documentation](#project-documentation) section.
+
+## Project Documentation
+The architecture documentation and API specifications are available in the `docs` folder. The documentation includes:
+- **Architecture Overview**: Detailed information on how OBS interacts with PRS, DAS, and AAS.
+- **API Reference**: List of available endpoints, request payloads, and response formats.
+- **Security Considerations**: Overview of authentication and data encryption practices.
+
+## Development and Contribution
+We welcome contributions! Please follow these steps:
+1. Fork the repository and create a new branch for your feature or bug fix.
+2. Follow our [contribution guidelines](CONTRIBUTING.md) for best practices.
+3. Submit a pull request detailing your changes.
+
+## License
+This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.
+
+## Contact Information
+For questions or support, please reach out to:
+- **Email**: [Adorsys](fpo@adorsys.de)
+- **GitHub Issues**: [Submit an issue](https://github.com/ADORSYS-GIS/webank/issues)
+
+## Acknowledgements
+- Thanks to the adorsys development team for their contributions.
+- Special thanks to the contributors and libraries that supported this project.
+- Special thanks to the development team and contributors for their support and dedication in building this project.
diff --git a/obs/obs-rest-api/pom.xml b/obs/obs-rest-api/pom.xml
index 01561b5..77f02cb 100644
--- a/obs/obs-rest-api/pom.xml
+++ b/obs/obs-rest-api/pom.xml
@@ -51,7 +51,6 @@
             <groupId>org.springdoc</groupId>
             <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
         </dependency>
-
     </dependencies>
 
 </project>
diff --git a/obs/obs-rest-api/src/main/java/com/adorsys/webank/obs/resource/RegistrationResourceApi.java b/obs/obs-rest-api/src/main/java/com/adorsys/webank/obs/resource/RegistrationResourceApi.java
new file mode 100644
index 0000000..e42c985
--- /dev/null
+++ b/obs/obs-rest-api/src/main/java/com/adorsys/webank/obs/resource/RegistrationResourceApi.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2018-2024 adorsys GmbH and Co. KG
+ * All rights are reserved.
+ */
+
+package com.adorsys.webank.obs.resource;
+
+import com.adorsys.webank.obs.dto.RegistrationRequest;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+
+
+@RestController
+@RequestMapping("/api/registration")
+public interface RegistrationResourceApi {
+
+    @Operation(summary = "Register a new bank account", description = "Accepts a phone number and public key for registration")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "Registration successful"),
+            @ApiResponse(responseCode = "400", description = "Invalid input")
+    })
+    @PostMapping
+    ResponseEntity<String> registerAccount(
+             @RequestBody RegistrationRequest registrationRequest
+    );
+}
diff --git a/obs/obs-rest-server/src/main/java/com/adorsys/webank/obs/resource/RegistrationResource.java b/obs/obs-rest-server/src/main/java/com/adorsys/webank/obs/resource/RegistrationResource.java
new file mode 100644
index 0000000..fcfff07
--- /dev/null
+++ b/obs/obs-rest-server/src/main/java/com/adorsys/webank/obs/resource/RegistrationResource.java
@@ -0,0 +1,22 @@
+package com.adorsys.webank.obs.resource;
+
+import com.adorsys.webank.obs.dto.RegistrationRequest;
+import com.adorsys.webank.obs.service.RegistrationServiceApi;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/registration")
+public class RegistrationResource implements RegistrationResourceApi {
+
+    @Autowired
+    private RegistrationServiceApi registrationService;
+
+    @Override
+    @PostMapping
+    public ResponseEntity<String> registerAccount(@RequestBody RegistrationRequest registrationRequest) {
+        String result = registrationService.registerAccount(registrationRequest);
+        return ResponseEntity.ok(result);
+    }
+}
diff --git a/obs/obs-rest-server/src/test/java/com/adorsys/webank/obs/resource/RegistrationResourceTest.java b/obs/obs-rest-server/src/test/java/com/adorsys/webank/obs/resource/RegistrationResourceTest.java
new file mode 100644
index 0000000..0c58595
--- /dev/null
+++ b/obs/obs-rest-server/src/test/java/com/adorsys/webank/obs/resource/RegistrationResourceTest.java
@@ -0,0 +1,46 @@
+package com.adorsys.webank.obs.resource;
+
+import com.adorsys.webank.obs.dto.RegistrationRequest;
+import com.adorsys.webank.obs.service.RegistrationServiceApi;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.when;
+
+public class RegistrationResourceTest {
+
+    @InjectMocks
+    private RegistrationResource registrationResource; // Class under test
+
+    @Mock
+    private RegistrationServiceApi registrationService; // Mocked dependency
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+    }
+
+    @Test
+    void registerAccount_ShouldReturnSuccessfulResponse() {
+        // Arrange
+        RegistrationRequest registrationRequest = new RegistrationRequest();
+        registrationRequest.setPhoneNumber(1234567890);
+        registrationRequest.setPublicKey("testPublicKey");
+
+        String expectedResponse = "Registration successful";
+        when(registrationService.registerAccount(registrationRequest)).thenReturn(expectedResponse);
+
+        // Act
+        ResponseEntity<String> responseEntity = registrationResource.registerAccount(registrationRequest);
+
+        // Assert
+        assertEquals(HttpStatus.OK, responseEntity.getStatusCode());
+        assertEquals(expectedResponse, responseEntity.getBody());
+    }
+}
diff --git a/obs/obs-service-api/pom.xml b/obs/obs-service-api/pom.xml
index 92fb833..cb99084 100644
--- a/obs/obs-service-api/pom.xml
+++ b/obs/obs-service-api/pom.xml
@@ -34,7 +34,6 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-openfeign</artifactId>
         </dependency>
-
         <dependency>
             <groupId>jakarta.ws.rs</groupId>
             <artifactId>jakarta.ws.rs-api</artifactId>
diff --git a/obs/obs-service-api/src/main/java/com/adorsys/webank/obs/dto/RegistrationRequest.java b/obs/obs-service-api/src/main/java/com/adorsys/webank/obs/dto/RegistrationRequest.java
new file mode 100644
index 0000000..31b56c5
--- /dev/null
+++ b/obs/obs-service-api/src/main/java/com/adorsys/webank/obs/dto/RegistrationRequest.java
@@ -0,0 +1,25 @@
+package com.adorsys.webank.obs.dto;
+
+public class RegistrationRequest {
+
+    private int phoneNumber;
+    private String publicKey;
+
+    // Getters and Setters
+
+    public int getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    public void setPhoneNumber(int phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+
+    public String getPublicKey() {
+        return publicKey;
+    }
+
+    public void setPublicKey(String publicKey) {
+        this.publicKey = publicKey;
+    }
+}
diff --git a/obs/obs-service-api/src/main/java/com/adorsys/webank/obs/service/RegistrationServiceApi.java b/obs/obs-service-api/src/main/java/com/adorsys/webank/obs/service/RegistrationServiceApi.java
new file mode 100644
index 0000000..2a8302b
--- /dev/null
+++ b/obs/obs-service-api/src/main/java/com/adorsys/webank/obs/service/RegistrationServiceApi.java
@@ -0,0 +1,7 @@
+package com.adorsys.webank.obs.service;
+
+import com.adorsys.webank.obs.dto.RegistrationRequest;
+
+public interface RegistrationServiceApi {
+    String registerAccount(RegistrationRequest registrationRequest);
+}
diff --git a/obs/obs-service-impl/pom.xml b/obs/obs-service-impl/pom.xml
index b998637..af1aa81 100644
--- a/obs/obs-service-impl/pom.xml
+++ b/obs/obs-service-impl/pom.xml
@@ -51,6 +51,7 @@
             </exclusions>
             <scope>test</scope>
         </dependency>
+
     </dependencies>
 
 </project>
diff --git a/obs/obs-service-impl/src/main/java/com/adorsys/webank/obs/serviceimpl/RegistrationServiceImpl.java b/obs/obs-service-impl/src/main/java/com/adorsys/webank/obs/serviceimpl/RegistrationServiceImpl.java
new file mode 100644
index 0000000..ebcc90c
--- /dev/null
+++ b/obs/obs-service-impl/src/main/java/com/adorsys/webank/obs/serviceimpl/RegistrationServiceImpl.java
@@ -0,0 +1,19 @@
+package com.adorsys.webank.obs.serviceimpl;
+
+import com.adorsys.webank.obs.dto.RegistrationRequest;
+import com.adorsys.webank.obs.service.RegistrationServiceApi;
+import org.springframework.stereotype.Service;
+
+@Service
+public class RegistrationServiceImpl implements RegistrationServiceApi {
+
+    @Override
+    public String registerAccount(RegistrationRequest registrationRequest) {
+        int phoneNumber = registrationRequest.getPhoneNumber();
+        String publicKey = registrationRequest.getPublicKey();
+
+        // Add logic for registering the account with phoneNumber and publicKey
+
+        return "Registration successful for phone number: " + phoneNumber; // Return message including the phone number
+    }
+}
diff --git a/obs/obs-service-impl/src/test/java/com/adorsys/webank/obs/serviceimpl/RegistrationServiceImplTest.java b/obs/obs-service-impl/src/test/java/com/adorsys/webank/obs/serviceimpl/RegistrationServiceImplTest.java
new file mode 100644
index 0000000..dbac4da
--- /dev/null
+++ b/obs/obs-service-impl/src/test/java/com/adorsys/webank/obs/serviceimpl/RegistrationServiceImplTest.java
@@ -0,0 +1,33 @@
+package com.adorsys.webank.obs.serviceimpl;
+
+import com.adorsys.webank.obs.dto.RegistrationRequest;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class RegistrationServiceImplTest {
+
+    private RegistrationServiceImpl registrationService;
+
+    @BeforeEach
+    void setUp() {
+        registrationService = new RegistrationServiceImpl();
+    }
+
+    @Test
+    void registerAccount_ShouldReturnSuccessMessageWithPhoneNumber_WhenGivenValidInput() {
+        // Arrange
+        RegistrationRequest request = new RegistrationRequest();
+        int testPhoneNumber = 123456789; // Set a valid phone number
+        request.setPhoneNumber(testPhoneNumber);
+        request.setPublicKey("validPublicKey"); // Set a valid public key
+
+        // Act
+        String result = registrationService.registerAccount(request);
+
+        // Assert
+        assertEquals("Registration successful for phone number: " + testPhoneNumber, result);
+    }
+
+    // You can add more tests here for edge cases, invalid input, etc.
+}
diff --git a/online-banking-app/pom.xml b/online-banking-app/pom.xml
index 313603d..38eb5e2 100644
--- a/online-banking-app/pom.xml
+++ b/online-banking-app/pom.xml
@@ -3,12 +3,11 @@
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.3.4</version>
-		<relativePath/> <!-- lookup parent from repository -->
+		<groupId>com.adorsys.webank</groupId>
+		<artifactId>webank-OnlineBanking</artifactId>
+		<version>0.1-SNAPSHOT</version>
 	</parent>
-	<groupId>com.adorsys.webank</groupId>
+
 	<artifactId>online-banking-app</artifactId>
 	<version>0.1-SNAPSHOT</version>
 	<name>online-banking-app</name>
@@ -64,14 +63,12 @@
 		<dependency>
 			<groupId>org.springdoc</groupId>
 			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
-			<version>2.1.0</version>
 		</dependency>
 
 		<dependency>
 			<groupId>com.h2database</groupId>
 			<artifactId>h2</artifactId>
 		</dependency>
-
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>