Another way of breaking this down, is UI that gets out of the way, and UI with a big ego. So many SaaS business tools have ego-driven UI, where it's all about

Another way of breaking this down, is UI that gets out of the way, and UI with a big ego. So many SaaS business tools have ego-driven UI, where it's all about keeping you in the tool, increasing engagement, etc. The problem is that people buy business tools to improve their productivity, the best tool for a business is one that requires zero time to use and provides some value. You want to get in, get value, and get out as quickly as possible so you can move on to delivering value to your business. Slack used to be good at this when it was just about IM, but then they became all about replacing other forms of communication... the problem is they weren't as good, some email does need to be email. Engagement went up, but "managing Slack" was a big time sink. My old company trialled Facebook Workplace, and probably because it was built with a social network mindset instead of a productivity tool mindset, it was an immediate time sink with very little value. There are lots of examples of the flip side, UI that gets out of the way, but they're usually pretty boring.