- Exam Code: PDI
- Exam Name: Platform Developer I (PDI)
- Updated: Aug 17, 2026
- Q & A: 205 Questions and Answers
Salesforce PDI Exam : Platform Developer I (PDI)
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How to book the PDI Exam
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Certification Path
There is no prerequisite for this exam.
Platform Developer I (PDI) Exam
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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Reference: https://trailheadacademy.salesforce.com/certificate/exam-platform-dev1---Plat-Dev-201
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Salesforce PDI Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Logic and Process Automation | 40% | - Apex classes, triggers, and methods - Process Builder, Flow, and approval processes - Asynchronous Apex: batch, queueable, future, scheduled - Platform events and publish-subscribe model - Governor limits and best practices |
| Topic 2: Salesforce Fundamentals | 7% | - Declarative development capabilities - Multi-tenant architecture and platform limits - Security model, profiles, permission sets and sharing |
| Topic 3: User Interface | 23% | - UI security and accessibility - Component communication and events - Visualforce pages, controllers and extensions - Integration with Lightning App Builder and Experience Cloud - Lightning Web Components (LWC) architecture and development |
| Topic 4: Data Modeling and Management | 13% | - Object relationships, fields, and schema design - Data operations, import/export and data management - SOQL and SOSL query construction and optimization |
| Topic 5: Testing, Debugging and Deployment | 17% | - Development environments and sandboxes - Debugging tools: Developer Console, logs, checkpoints - Unit test creation, code coverage requirements - Deployment tools: Salesforce DX, CLI, change sets |
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