Multi-Vendor E-commerce Marketplace – Technical Blueprint Required

Project Description:
I need a professional **technical blueprint/documentation** for building a multi-vendor e-commerce marketplace. The blueprint should clearly explain how the platform will work so that developers can later build it efficiently.

What I Need in the Blueprint:

* Platform overview and concept
* User roles (Customer, Seller, Admin)
* Complete feature list
* Page-by-page structure / UI flow
* Product system (categories, variants, inventory)
* Order lifecycle (cart → checkout → delivery)
* Payment flow (example integration such as Cashfree)
* Logistics flow (example integration such as Shiprocket)
* Database structure / schema overview
* Recommended tech stack for Web, Android, and iOS
* Basic system architecture diagram

Goal:
Create a clear development blueprint that can later be used by developers to build the platform.
Deliverable:
A structured document explaining the system flow, architecture, and technical plan.

Please include in your proposal:

* Experience in system architecture or marketplace platforms
* Example of similar documentation or projects