I have been building a browser based serverless infrastructure which has so many uses (like any computer) its hard to say what it's good at. To me, its obviously very good at lots of things, but people did not seem that interested in it. It's like they could not see the possibilities.
So I made some apps that I thought were cool, mostly more integrations with Zapier and things. The fact these were securely implemented in the browser I thought was cool, but still... not much traction.
Then, I looked at what my target customers were building: Twitter bots. So I wrote a tutorial on making serverless twitter bots in the browser, and it starts reverberating in the community.
My customers can identity with it now. They can see how it solves problems they have. Hopefully now I have some momentum I can keep adding to it.