We've been seeing increased cooperation between Google and Samsung recently, but this is a big deal. Samsung has contributed part of its Knox security software to run as a core part of Android. It will keep work and personal data separate, and be standard in Android L. It will also allow Samsung Knox Independent Software Vendors (ISVs) and developers to reach a wider audience outside of Samsung branded devices. Injong Rhee, Senior Vice President of KNOX Business Group at Samsung Electronics, said on the partnership:
Beyond separate data, Google will also allow companies to purchase apps in bulk and deploy them to employees in bulk as well. These features will be built into Android L, but Sundar Pichai said that Google is working on a standalone app that will offer similar features for older versions of Android.
source: Google & Samsung