A year ago I would say Flask + Firebase, but now I have began to understand that that is the quickest way to build a web app FOR ME. The best tech stack is the

A year ago I would say Flask + Firebase, but now I have began to understand that that is the quickest way to build a web app FOR ME. The best tech stack is the one that gets the job done FOR YOU, in the least amount of time. If it takes me 4 weeks to learn some arbitrary <INSERT NOUN HERE>.js framework to then be able to do stuff "quickly" then it better cut down development time by atleast +4 weeks to be worth it. No doubt, some amount of Yak shaving is worth it for the future (when you already have acquired a skill and no longer need to spend time learning) but in a scenario where speed of dev is important, go for technologies that you know and are comfortable with (which differs from person to person) Only general piece of advice I would give is to use SaaS tools to do heavy lifting. Tools like Auth0, Firebase Cloud Functions and authorization, etc can save you quite a bit of time compared to the learning curve they come with. Not to mention these products have teams behind them who work round the clock to make them developer friendly, so if you can't understand and get them running quick enough then IMO the tool is flawed not the user.