What is the Platform App Builder certification exam structure and the weighting of each topic area?

The Salesforce Certified Platform App Builder exam (65 questions, 105 minutes, 63% pass mark) covers these domains with approximate weightings:
Data Modeling and Management: 23% — Objects, relationships, fields, schema limits, formula fields, rollup summaries, data management tools.
Business Logic and Process Automation: 28% — Flow Builder (all types), validation rules, approval processes, when to use which automation tool.
User Interface: 22% — Lightning App Builder, dynamic forms/actions, page layouts, record types, quick actions, mobile layouts.
Reporting: 9% — Report types, dashboard components, report filters, custom report types.
Mobile: 8% — Salesforce Mobile app navigation, mobile-optimised pages, offline limitations, Field Service Mobile.
App Deployment: 10% — Change sets, sandboxes, Salesforce DX basics, AppExchange managed packages, deployment dependencies.
The largest domains (Business Logic and Data Modeling) together account for over half the exam — focus preparation effort there first.