Example 1: It is necessary to design an event matrix for the credit application. Context: the user goes through fintech onboarding — comes via an advertisement, registers, fills out a form, passes scoring, receives a decision, signs a contract, receives money on the card. The task is to outline a logical structure for the event matrix for end-to-end analysis: which events are recorded on the client and which on the server (frontend/backend) and why, as well as defining critical attributes for key steps.