Developing a B2C portal involves several key steps: defining requirements, designing UI/UX, backend development, testing, and deployment. Costs vary based on complexity but typically include development, design, hosting, and maintenance fees. Essential features include user-friendly navigation, secure payment gateways, product catalogs, customer support integration, and analytics for insights. Customization options, mobile responsiveness, and scalability are also crucial. Post-launch, continuous updates and marketing strategies are essential to maintain relevance and engagement. Efficient project management ensures timely delivery and adherence to budget constraints, making it vital for success in the competitive B2C marketplace.