Which infrastructure do you use for app which has 10M+ Users
I am working at mid size company and we have IOS and Android enterprise app which is used by 10M+ users ( app is similar to duo security/ send push notifications and bunch of small features)
I wanted to know how big company like Facebook, Uber , Pinterest do their mobile app testing? What infrastructure they use ?
Need your expertise as I need to come up with solution
I want to understand what infrastructure do i use to test my app ? Like there are different sets of device and os are available so is it good idea to test on real devices or should i do it on cloud base simulators?