Why should a customer's success be documented?

What are two examples of leveraging data to identify a customer barrier? (choose two)

Customer A has 120 000 employees and a meeting booking system that is 20 years old It provides a personalized service that arranges all aspects of video conference meeting. This service includes 21 staff people globally. Customer A has invested in a video conferencing solution. Their desired outcome is to create a cost-savings self-serve approach to achieve business innovation through face-to-face communications.
Which two main barriers to adoption does the customer face? (Choose two.)

Which action should be taken to identify and remove barriers when a customer moves from the Implement to the Use stage in the lifecycle?

What is a consideration in evaluating readiness for adoption?