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Last Updated: Jul 27, 2026
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Platform Developer I (PDI) Exam is related to Salesforce Certified Platform Developer I Certification. This exam validates the Candidate knowledge and skills in building custom applications on the Lightning Platform. It also deals with the ability of the Lightning Platform to develop custom business logic and interfaces to extend Salesforce using Apex and Visualforce.
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Salesforce Certified Platform Developer I certification is an internationally-recognized validation that identifies persons who earn it as possessing skilled as a Salesforce Certified Platform Developer I. If a candidate wants significant improvement in career growth needs enhanced knowledge, skills, and talents. The Salesforce PDI Exam provides proof of this advanced knowledge and skill. If a candidate has knowledge of associated technologies and skills that are required to pass the Salesforce PDI Exam then he should take this exam.
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-platform-dev1---Plat-Dev-201
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| Section | Weight | Objectives |
|---|---|---|
| Lightning Platform Architecture | 15% | - Describe the architectural considerations when building Lightning components - Describe the Salesforce lifecycle and explain how updates and new features are delivered - Describe the Lightning Platform architecture and explain the MVC design pattern - Describe the capabilities and use cases for the Lightning Framework and event-driven architecture |
| Process Automation and Logic | 26% | - Given a scenario, describe when and how to use formula fields, roll-up summary fields, and process automation features - Describe the features of the sObject and Apex common library - Describe the key attributes of an Apex class - Describe the syntax of Apex classes and triggers - Describe the capabilities of Apex and the programmatic capabilities of the Lightning Platform - Describe the capabilities and use cases for VisualFlow - Given a scenario, describe when and how to use Apex transaction control - Describe the capabilities and use cases for Apex managed sharing - Describe the features of the Salesforce exception handling mechanism - Describe the capabilities and use cases for the Lightning Flow - Describe the features of the Governor Limits and describe how to write efficient Apex code |
| Data Modeling and Management | 12% | - Describe the options for and considerations when importing and exporting data - Describe the capabilities and use cases for external objects - Given a set of business requirements, design and implement a schema for custom objects and relationships |
| User Interface | 13% | - Describe the capabilities and use cases for lightning web components - Describe how to use Salesforce standard events and custom events - Given a scenario, describe how to expose Apex methods as Lightning Component events - Describe the programmatic capabilities of Visualforce and Lightning Component frameworks - Describe the differences between and use cases for Visualforce and Lightning components |
| Integration | 10% | - Describe the capabilities of the Salesforce OAuth framework - Describe the capabilities and use cases for REST API and Batch API - Describe when and how to use Salesforce Connect/External Objects - Describe the capabilities and use cases for Apex web services and callouts |
| Salesforce Fundamentals | 10% | - Identify the appropriate use case for a custom visualforce versus a standard Lightning component - Describe the capabilities of the core CRM objects in Salesforce - Describe the declarative configuration options available to customize the UI - Design the data model based on business requirements - Describe the capabilities of the relationship types - Describe the capabilities of the Salesforce UI/Lightning Experience - Given a scenario, identify the appropriate field type |
| Testing, Debugging, and Deployment | 14% | - Describe the testing requirements for Salesforce and describe the use cases for various testing tools - Describe the use cases for Salesforce Edge and when to use sandbox vs. production environments - Given a scenario, identify appropriate tools for debugging and monitoring errors - Describe the frameworks and best practices for writing Apex code - Describe the capabilities and use cases for the Salesforce CLI and Developer Console - Describe the capabilities of Salesforce metadata and describe the use cases for change set deployment and package-based deployment |
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