As always, it depends. With it's comprehensive and proven support for complex business needs across various deployment scenarios, it fits very well to enterprise needs. And you should always choose based on your needs, not on hype or buzzwords. If you know you are going to need a back-end-for-frontend layer, or your own custom APIs, you can do this with PaaS without having to involve yet another tech vendor. If you have this already, or require a completely segregated services approach, mixing and matching stacks and services, then SaaS might be the right choice.
