How I built an app with 500,000 users in 5 days on a $100 server

There seems to be a general consensus in the world of startups that you should build an MVP (minimum viable product) without caring too much about technical scalability. I’ve heard many times that the only priority is to just get the product out there. As long as your business model would work at scale, you’re good. You shouldn’t waste time and money on making a technically scalable product. All y