Salesforce MuleSoft Developer II Certification Exam Guide
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⚡ Quick Answer
What is the Salesforce MuleSoft Developer II Certification Exam Guide?
The Salesforce MuleSoft Developer II Certification Exam Guide validates expertise in the relevant Salesforce domain. Exam format: 65% passing score. Offered by Salesforce, registered through Webassessor/Kryterion. Updated for Winter '26.
Winter '26 Edition
Last Updated: March 2026 | Exam Version: Winter '26
The MuleSoft Developer II certification validates your expertise in building production-ready Mule applications within a DevOps-driven environment. This advanced credential is designed for developers with deep Mule experience who need to demonstrate mastery of API design, security protocols, and operational excellence. You must already hold the MuleSoft Developer I certification and possess hands-on experience with complex Mule integration projects.
⚡ What's New in Winter '26
🤖 Enhanced DevOps Focus
Winter '26 emphasizes advanced deployment strategies and Runtime Manager operations for modern cloud-native Mule applications.
🛡️ Security-First API Design
Updated content covers OAuth 2.0 patterns, API rate limiting, and zero-trust security architectures in API-led connectivity.
✨ DataWeave 2.0 Mastery
New exam sections deepen focus on advanced DataWeave transformations and performance optimization for large-scale data mapping.
📊 Exam At a Glance
| Certification Name | Salesforce MuleSoft Developer II |
| Level | Advanced Developer |
| Prerequisites | MuleSoft Developer I certification and advanced Mule development experience |
| Number of Questions | 60 multiple-choice |
| Duration | 120 minutes |
| Passing Score | ~70% |
| Exam Fee | $200 USD |
| Retake Fee | $200 USD |
| Delivery | Proctored online or at a testing center |
🎯 Exam Domains & Weightings
1. Advanced Mule Development
30%This domain evaluates your command of sophisticated Mule architectural patterns, reusable components, and enterprise integration best practices. You'll demonstrate proficiency with advanced scoping, connector customization, and design patterns that enable scalable integration solutions across complex business environments.
🆕 Winter '26: Expanded coverage of Mule 4 advanced patterns and composable architecture principles for microservices-based integrations.
2. API Design and Security
25%This section assesses your ability to design resilient RESTful APIs while implementing modern security frameworks including OAuth 2.0, API versioning, and threat mitigation strategies. You'll prove competency in securing APIs from unauthorized access and designing them for developer experience and organizational reuse.
🆕 Winter '26: New emphasis on zero-trust API security models and advanced OAuth 2.0 flow implementations for enterprise deployments.
3. Error Handling and Performance
25%This domain tests your expertise in designing robust error recovery mechanisms and optimizing Mule application performance under production load. You'll demonstrate knowledge of error scoping strategies, global exception handlers, and performance tuning techniques that ensure reliability and efficiency.
🆕 Winter '26: Increased focus on performance monitoring with Anypoint Observability and advanced error recovery patterns in distributed systems.
4. Deployment and Operations
20%This section validates your operational readiness through understanding deployment architectures, runtime management, and production monitoring. You'll showcase proficiency with CloudHub, hybrid deployments, versioning strategies, and operational governance within a DevOps framework.
🆕 Winter '26: Enhanced coverage of Runtime Manager advanced features and CI/CD pipeline integration for enterprise-scale Mule deployments.
❓ Sample Exam Questions
A developer has completed the MuleSoft Developer II certification exam. Which statement best describes what this certification validates about their professional capabilities?
- A. They understand basic API terminology and can explain integration patterns in theoretical discussions
- B. They possess the expertise to autonomously architect, implement, and operationalize enterprise-level Mule solutions following DevOps methodologies
- C. They can design and execute comprehensive digital marketing strategies across multiple cloud platforms
- D. They are qualified to lead frontend development teams and oversee user experience design initiatives
A developer needs to convert JSON data from a REST API into XML format while applying business logic to rename fields and filter certain records. Which MuleSoft component should they use?
- A. Apex code in a Salesforce connector
- B. DataWeave language within a Transform Message component
- C. AMPscript within email services integration
- D. Visualforce controllers for UI rendering
When designing a Mule integration solution, which strategy best demonstrates proper error management practices?
- A. Disable error notifications to avoid cluttering system logs
- B. Configure error handlers at both local scope and system-wide levels, implementing distinct remediation tactics for each error type
- C. Remove problematic connectors and rewrite the entire flow when errors occur
- D. Depend exclusively on JVM-level exception handling mechanisms
A company needs to deploy Mule integration flows across multiple environments including cloud and on-premises infrastructure. Which Salesforce platform should the administrator utilize to manage these deployments?
- A. Marketing Cloud for deployment orchestration
- B. Anypoint Runtime Manager and CloudHub for deployment and monitoring
- C. Service Cloud workflow engine
- D. Salesforce Data Cloud integration tools
Your organization is implementing an integration strategy where multiple business units need to access customer data through a common interface. Which principle from API-led connectivity best supports this requirement?
- A. Creating separate, isolated APIs for each business unit to ensure data security and prevent interference
- B. Designing a single API that serves as a shared asset across different projects and organizational units
- C. Building APIs that are tightly coupled to specific applications and cannot be modified without breaking functionality
- D. Implementing APIs as temporary solutions that are retired after their initial integration project completes
📚 Study Resources
🏃 Trailhead
Complete the official Certification Prep trail — free, covers all exam domains, and is updated each release.
Go to Trailhead →📄 Official Exam Guide
Download the official exam guide from Trailhead for the exact domain weightings and topic list for Winter '26.
Official Guide →💬 Trailblazer Community
Join the study group on the Trailblazer Community to share tips, ask questions, and connect with other candidates.
Join Community →💡 Top Exam Tips
- Focus intensively on Advanced Mule Development (30% of exam): internalize sophisticated architectural patterns, composition scope management, and enterprise integration best practices that differentiate advanced developers.
- Dedicate substantial study time to API Design and Security (25%): master OAuth 2.0 authentication flows, API versioning strategies, rate limiting implementation, and comprehensive security posture for protecting exposed APIs.
- Thoroughly prepare for Error Handling and Performance (25%): design sophisticated error recovery mechanisms using error scopes and global handlers, and apply optimization techniques for throughput and latency reduction.
- Study real-world scenarios involving production deployments: understand CloudHub and Runtime Manager capabilities, CI/CD integration patterns, and operational monitoring through Anypoint Observability.
- Practice hands-on DataWeave transformations extensively: work through complex mapping scenarios, nested object transformations, and performance-critical data processing to build practical expertise.
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