How would you structure a system with multiple bussiness "regions"?

For example, an e-commerce site, where there are a "region" for the sellers, with feature align to managing products or selling analytic. And a front-facing "region" for regular clients to browse the products, have a cart, bookmark or follow products or brands. When there are 2 (or more) distinct regions for different functionality and client. How would you structure your Laravel project? Would you follow DDD? Microservices? Or something else? To be clear it is not strictly e-commerce, but any systems that had multiple regions like that. A travel agency where there are region for hotel owner to register and manage their hotel versus a region for everyone to search and book hotel. A streaming app where everyone can browser their favorite streamer but the streamers have their own managing place as well as analytic... Also count submitted by /u/Lumethys [link] [comments]