Detailed Software Design Document Sample PDF

Introduction
Creating a detailed software design document (SDD) is a crucial step in the software development lifecycle. It serves as a blueprint for developers, guiding them through the implementation process while ensuring that all stakeholders have a clear understanding of the project. This document outlines the architecture, components, interfaces, and other essential aspects of the software system, helping to avoid miscommunication and reducing the risk of errors during development.

Purpose
The primary purpose of this SDD is to provide a comprehensive guide that covers every aspect of the software design. It ensures that all team members are on the same page regarding the system's structure and functioning. This document is intended for software architects, developers, testers, and project managers who are involved in the software development process.

Scope
This SDD applies to the development of a web-based application designed to manage customer relationships for a mid-sized enterprise. The document will cover the system's architecture, including high-level and detailed designs, data models, and security considerations.

System Overview
The system is a Customer Relationship Management (CRM) application designed to enhance customer interaction, track sales, and manage marketing campaigns. The application is web-based, with a responsive design to ensure compatibility across various devices. The system will be built using a microservices architecture to enhance scalability and maintainability.

Architecture Design
The architecture of the CRM application is based on a microservices model, divided into several independent services that communicate through RESTful APIs. Each service is responsible for a specific business capability, such as user management, customer data processing, or report generation. The microservices will be containerized using Docker, orchestrated by Kubernetes, to ensure efficient scaling and deployment.

Component Design

• User Management Service: Handles user authentication, authorization, and profile management. It will integrate with OAuth 2.0 for secure authentication.
• Customer Data Service: Manages customer information, including contact details, purchase history, and interaction records. This service will use a NoSQL database for flexibility in handling diverse data types.
• Sales Tracking Service: Tracks sales activities, from lead generation to deal closure. It will integrate with external email services for communication automation.
• Marketing Campaign Service: Manages marketing campaigns, including email blasts, social media posts, and targeted ads. This service will include analytics features to track campaign effectiveness.

Data Model
The data model is designed to handle a variety of customer-related information, including personal details, purchase history, and interaction records. The model will be implemented using a NoSQL database, specifically MongoDB, which allows for flexible schema design.

Entity	Attributes	Description
User	ID, Name, Email, Role, Password	Stores user credentials and profile details
Customer	ID, Name, Email, Phone, Address, Purchase History	Stores customer contact details and purchase history
Sales Activity	ID, Customer ID, Activity Type, Date, Status	Tracks sales activities
Marketing Campaign	ID, Name, Type, Start Date, End Date, Success Metrics	Stores information on marketing campaigns

Interface Design
The application will feature a user-friendly interface with dashboards that provide quick access to key metrics and functionalities. The UI will be designed using React.js, ensuring a responsive and intuitive experience for users.

Security Considerations
Security is a top priority in the design of the CRM application. The system will implement robust security measures, including:

• Data Encryption: All sensitive data, including customer details and user credentials, will be encrypted using AES-256 encryption.
• Authentication and Authorization: The system will use OAuth 2.0 for secure authentication and role-based access control (RBAC) to ensure that users can only access information relevant to their roles.
• Audit Logging: All user actions will be logged to maintain an audit trail for security purposes.

Deployment Considerations
The CRM application will be deployed using a continuous integration/continuous deployment (CI/CD) pipeline, ensuring that updates can be rolled out efficiently with minimal downtime. The pipeline will include automated testing to catch any issues before deployment.

Conclusion
This SDD provides a detailed guide to the design and implementation of a CRM application using a microservices architecture. By following this document, the development team can ensure that the system is built to meet all requirements while maintaining high standards of quality and security.