Meta Technical Program Manager interview questions

45 minutes phone interview. There was an introduction about myself and then a Technical System Design question to describe how to define a product requirements and then how to design the technical system. plus a Behavioural question to show how I've dealt with situations in the past.

-> One telephonic - response pretty fast ....within a day -> 5 rounds of onsite interview spread over 2 days. Very professional and structured as we expect from companies like amazon/facebook