PaaS for a LAMP service?
I've been told that launching a service with a simple hosting service is a bad idea and that I should use a PaaS to scale. While maintaining my online anonymity, my web service is nothing more than a simple upload service for all intent and purposes. There is no user-user interaction. The experience is as follows: log in, upload, view history. At least,that's how it will be for the time being. I also run a couple of cron jobs to send users reminders and to scan the DB for changes. Although I expect my storage needs to multiply over time, I don't see why I can't just purchase more storage from my web hosting guys.
Why do I need to use a PaaS, and furthermore, is Heroku something to look at especially if my whole website is written in PHP? I checked it out, and I have no idea what's going on on. Seems super convoluted. But then again, I'm a CS-gradguy just doing a simple side-project.