Alan and Brent have condensed their thoughts on Modern Testing into 7 principles you can find here
Starting here the podcast goes into each principle in detail.
Or:
Principle 1: Our priority is improving the business.
AB Testing – Episode 81: Business Rulz!
Principle 2: We accelerate the team, and use models like Lean Thinking and the Theory of Constraints to help identify, prioritize and mitigate bottlenecks from the system.
AB Testing – Episode 83: Accelerating the Team
Principle 3: We are a force for continuous improvement, helping the team adapt and optimize in order to succeed, rather than providing a safety net to catch failures.
AB Testing – Episode 84: Stories about Changes and Nets
Principle 4: We care deeply about the quality culture of our team, and we coach, lead, and nurture the team towards a more mature quality culture.
AB Testing – Episode 85: The Community Principle
Principle 5: We believe that the customer is the only one capable to judge and evaluate the quality of our product
AB Testing – Episode 86: Not the Customer’s Champion
Principle 6: We use data extensively to deeply understand customer usage and then close the gaps between product hypotheses and business impact.
AB Testing – Episode 87: The One About Data
Principle 7: We expand testing abilities and knowhow across the team; understanding that this may reduce (or eliminate) the need for a dedicated testing specialist.
AB Testing – Episode 88: Testing Isn’t Dead (Testers, OTOH…)
No. Principle #7, read carefully, implies that when Modern Testing principles are followed, the team may mature to a point where a dedicated tester is not necessary. Source. Alan has stated in (episode number needed) that it will be "very obvious" when this is the case.