Professional Development of Web, Mobile & Desktop Application in .NET, .NET Core, Android With Modern Architecture like Domain-Driven Design, Microservice Architecture, Event Bus Architectures. The business-to-consumer aspect of all product is the most visible business use of the World Wide Web. The primary goal of an e-commerce site is to sell goods online. This project deals with developing based on client requirement. The system is implemented using a 3-tier approach, with a backend database, a middle tier of Microsoft Internet information Services , front end client. in order to develop a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client side scripting techniques, implementation technologies relational databases a basic website where consumer is provided with know about the technologies used to develop such as application. This document will discuss each of the underlying technologies to create and implement.