Welcome to your interview.
The question is on your right: Security TLAs and Zscaler Context. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Define the TLAs and ETLAs involved with security, discuss their history, and apply them to Zscaler and its competition.