While IPS inspection is a key component to a proper defense in depth strategy, understanding how and where to implement it within your organization is just as important. In this paper, we will consider what IDS/IPS devices are designed to do, how their capabilities differ based on their primary function, and where such functionality is best deployed. We will also consider Zscaler’s offering, in which IPS capabilities are a major part of the company’s Advanced Persistent Threat Protection strategy, in addition to a number of other, complementary techniques.