Salesforce Certified Platform Developer I is a core certification designed for developers with foundational skills in programming and configuration on the Lightning Platform. It covers key technical areas including multi-tenant platform fundamentals, declarative and programmatic development (such as Apex, Visualforce, and Lightning), data modeling and management, process automation and logic implementation, user interface development, as well as testing, debugging, and deployment. AAAdemy provides exam-outline–aligned knowledge explanations, study plans, learning strategies, exam tips, and online practice questions to help you prepare in a structured way and strengthen your practical development skills.