What is the easiest way to get AB-testing with Marathon & Mesos?
We're currently investigating an enterprise solution called vamp, but if there are any good open source solutions, that'd be great to know.
DISCLAIMER : I work for Mesosphere so my answer might not be most unbiased
DC/OS is an open-source solution that comes with Mesos/Marathon and much more out of the box :
There is a Mailing list and Slack Comuunity to help you get started
Mesosphere also has an Enterprise solution which comes with a bunch of closed source security features and support. But DC/OS is an "open core" product. Feature Comparison between OSS and Enterprise