Software-as-a-Service (SaaS) is, for better or worse, the model of modern software distribution and use. There are many benefits to this arrangement, but there are also significant security issues. Unfortunately, these security issues are ever-evolving and target almost every managed service provider on the market.

This article touches on some foundational realities, challenges, and considerations for SaaS security. This includes questions of data management, app and vendor integration, and maintaining system integrity while handling a variety of users.