I got the Google Professional Architect cert about half a decade ago and it did help me understand the cloud quite well. It feels like "a marketable skill". I g

I got the Google Professional Architect cert about half a decade ago and it did help me understand the cloud quite well. It feels like "a marketable skill". I got more cloud certs from Azure and AWS later, but only the first "hit" in terms of learning because it's all the same after. But the first one really helped me understand the landscape. For me, networking or security (mostly due to the networking part) are probably next to help understand something relevant and used by senior devs sometimes. The other route is just to grind FAANG interviews for data structure. As much hate as it gets and as much as I haven't personally done it, it might also be the more practical way to go for job security. Honestly, a lot of great front end devs don't know any of this stuff and are just amazing with React, know all the tools (Storybook, Figma, Contentful, Netlify) etc and are good with that. P.S. Auth - you might want to learn Auth0 or Okta and the underlying principles. Comes up on every project. P.S.S. You are going to get a lot of biased, personalized opinions here like mine, so really try to see the rationale and decide what YOU need. For example, I see IoT just in the post below - no one cares about IoT if you aren't specializing in IoT. He also wrote a hypervisor it looks like - no one will ever have him do that irl, unless he decides to dedicate his whole life to it. Etc - nothing against that guy, just convenient example.