Video conferencing came into the picture for Agile development teams. It is the optimal, most efficient form of communication currently available. With a free platform such as Skype, Google Hangouts, or Google Duo, you can speak face-to-face with anyone throughout the internet-connected world from the comfort of your own (home?) office.
That fact overcomes the distance involved in outsourcing your QA process offshore and leaves you in complete control of your software quality. Your Agile team can now spread halfway around the world, yet still share the fast iteration and close collaboration between developers and QA testers needed to ensure a quality build.