APZ questionnaire stands for "adaptive pre-registration questionnaires" which are a set of questions that help companies learn more about someone before they become a customer. It's like a survey. The questions are meant to help the company better understand their potential customer and provide a better service that meets their needs. For example, a company might ask questions about your interests, lifestyle, or budget in order to give you tailored recommendations that fit your lifestyle. They might ask what type of products or services you're looking for, or what types of features you'd like in a product, so they can show you things that are more likely to be of interest to you.