Unless there are any unusual requirements, if I were starting a web project today I would use these technologies: - Angular/Bootstrap on the front end -

Unless there are any unusual requirements, if I were starting a web project today I would use these technologies: - Angular/Bootstrap on the front end - Java/Spring Boot on the server - PostgreSQL on the data tier - deploy on AWS All of these are distinctly conservative choices at this point, but using tried-and-true technologies has real advantages. They raise no red flags with bosses or prospective investors. They are well supported and will be for a long time. And it is easy to find knowledgeable people if you need to scale up staff. Since you are a Rails guy, you might want to substitute Rails for Spring Boot. It's a respected system, and you already know it. Win. If I had the latitude to take one risk in choosing the tech stack, I would swap out the Java/Spring Boot for Haskell/Yesod, since I grow increasingly frustrated with Java's verbosity. But this choice definitely has downsides: I know Java _much_ better than Haskell, and Haskell is rare enough that if I needed more than a couple of developers, I'd need to either hire them remotely or develop them from scratch. Similarly, you might want to take a chance on one off-beat component if it catches your eye. But just one.