I recently worked on a project that includes an in-flow step for users to sign an agreement without leaving the site. DocuSign makes this inordinately difficult. Their docs are obtuse and confusing, especially around auth, and you get a ton of annoying emails from a salesperson just for signing up for a dev account to figure out how things work.

HelloSign on the other hand provides a library for embedding an agreement into a flow and makes it a cinch. I didn't need to create a HelloSign account--I just `npm install`ed the library and got it working within minutes without having to look at any docs.

I'd imagine this is a big factor given that developers often have a lot of sway in influencing these kinds of decisions and get annoyed by unnecessary "enterprise" baloney when it's not really needed.