The Salesforce Certified Platform Developer II (PDII) exam validates advanced development skills for professionals building custom solutions on the Salesforce platform. This certification is designed for developers with solid Apex and Lightning experience who need to demonstrate expertise in complex integrations, performance optimization, and enterprise-level application design. This page provides a structured study roadmap covering the core exam domains and practical preparation strategies to help you pass confidently.
Use this topic map to guide your study for Salesforce PDII (Salesforce Certified Platform Developer II) within the Platform Developer II path.
The PDII exam uses multiple question types to assess both theoretical knowledge and practical problem-solving ability in real-world development scenarios.
Questions progress in difficulty and emphasize practical decision-making skills that reflect the work you perform as an enterprise platform developer.
Effective PDII preparation requires structured study mapped to each domain, hands-on practice with Salesforce orgs, and regular self-assessment. Plan 4-6 weeks of focused study, dedicating time each week to one or two core topics while reinforcing prior material.
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Testing, Debugging, and Deployment and Process Automation/Logic/Integration usually account for a larger portion of the exam because they directly reflect daily development work. However, Performance and Advanced Developer Fundamentals are equally critical for passing, as they test your ability to write scalable, maintainable code. All five domains are essential; focus on mastering each rather than trying to predict question distribution.
In practice, these domains overlap constantly. For example, you might build a Lightning User Interface component that triggers an asynchronous Process Automation flow, which integrates with an external system via an API. Your code must be tested, debugged, and optimized for Performance while following Advanced Developer Fundamentals like security and design patterns. Understanding these connections helps you answer scenario-based questions and build better solutions on the job.
Most candidates benefit from at least 2-3 years of Salesforce development experience, including solid Apex and Lightning skills. However, focused study and hands-on practice in a developer org can accelerate readiness. Prioritize labs that involve writing Apex triggers, building Lightning components, creating test classes, and working with APIs; these reinforce exam concepts and build confidence.
Candidates often overlook governor limits and performance implications when writing code, miss security considerations in integration scenarios, or fail to account for asynchronous processing requirements. Another frequent error is not reading scenario questions carefully; take time to identify what the question actually asks before selecting an answer. Reviewing practice test explanations helps you recognize and avoid these pitfalls.
In the final week, shift from learning new content to reinforcement and pacing practice. Spend 3-4 days reviewing weak topic areas using your study notes and practice questions, then dedicate 2-3 days to full-length timed practice tests. On the last day or two, do a light review of high-risk topics and focus on rest and confidence-building rather than cramming. This approach locks in knowledge and reduces test anxiety.
A developer is tasked with creating a Lightning web component that is responsive on various devices,
Which two components should help accomplish this goal?
Choose 2 answers
Lightning-layout and lightning-layout-item are components used in Lightning Web Components to create responsive grid layouts that adapt to the screen size of various devices.
Lightning Layout: Component Reference
Lightning Layout Item: Component Reference
A developer is working with existing functionality that tracks how many times a stage has changed for an Opportunity. When the Opportunity's stage is changed, a workflow rule is fired to increase the value of a field by one. The developer wrote an after trigger to create a child record when the field changes from 4 to 5.
A user changes the stage of an Opportunity and manually sets the count field to 4. The count field updates to 5, but the child record is not created.
What is the reason this is happening?
https://help.salesforce.com/s/articleView?id=000384697&type=1
There is an Apex controller and a Visualforce page in an org that displays records with a custom filter consisting of a combination of picklist values selected by the
user.
The page takes too long to display results for some of the input combinations, while for other input choices it throws the exception, "Maximum view state size limit exceeded''.
What step should the developer take to resolve this issue?
To resolve the issue of the Visualforce page taking too long to display results or exceeding the view state limit, the developer should use a StandardSetController or implement SOQL LIMIT in the Apex controller. This limits the number of records that are processed and displayed at one time, which can prevent view state errors and improve performance.
Universal Containers develops a Salesforce application that requires frequent interaction with an external REST API.
To avoid duplicating code and improve maintainability, how should they implement the APL integration for code reuse?
Creating a reusable Apex class for API integration allows for code encapsulation and maintainability. This class can then be invoked from any other Apex class that requires interaction with the API, preventing code duplication.
A developer is inserting, updating, and deleting multiple lists of records in a single transaction and wants to ensure that any error prevents all execution.
How should the developer implement error exception handling in their code to handle this?
Using Database.setSavepoint() and Database.rollback() within a try-catch statement is the recommended approach for handling transactions that involve multiple DML operations. This allows the developer to roll back all changes if an error occurs, ensuring that partial changes are not committed to the database.
