Vercel is the company that made the Next.js framework. Therefore, they made some handy optimisations. Not only deploying using Vercel is very easy, it also brings some enhancements out of the box, compared to different hosting vendors.
Vercel is very great if you just want to play around and build a POC or demo. It's also great for real business apps, but like any other vendor, it's up to you to check if they pricing fits your usage.
We are a bit wary about recent changes and decisions made by the Vercel team, in particular regarding their 2020 April Pricing changes, and we led a discussion about it.
Currently, the most controversial decision they've made is about the 12-24 max serverless functions. We suggest you learn heavily about that if you're considering Vercel.