My main point was that writing all the custom stuff was why the staffing numbers were so high. One small correction - In this case they also do not have wareho

My main point was that writing all the custom stuff was why the staffing numbers were so high. One small correction - In this case they also do not have warehouses since items are shipped from craftspeople. I also would expect mobile apps could be done by a team of a handful of people. As for SOA vs monolithic apps (highscalability link currently is a 404), it's largely horizontal scaling and a load balancer. That in itself shouldn't change architectual choices.