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Salesforce Certified System Architect – Complete 2026 Guide
System Architect is earned, not tested. You get it when you hold Platform Developer I, Integration Architect, Development Lifecycle and Deployment Architect, and Identity and Access Management Architect.
This credential is earned by passing 5 component exams, not a single test:
Exam Topics
Last updated:
Who is the System Architect exam for?
- Enterprise Architects: You design how Salesforce fits with the rest of the company's systems, logins and release process.
- Integration Specialists: You already work on APIs and middleware and want the wider architect credential that covers identity and deployment too.
- IT Leaders: You want your team to have a recognised path toward Technical Architect (CTA).
How this credential is earned
There is no exam to book for Salesforce Certified System Architect. You earn it by holding the component certifications listed above, so the cost is the sum of those exam fees. Each component exam page lists its own fee, format and retake policy.
Official references: Use the issuer’s current materials to confirm exam objectives, format, and fees before booking.
Official sources: Salesforce exam pricing·Independent exam-prep resource; details may change.
Exam Tips
- 1All four pillars are 25%. No section can be skipped.
- 2Data Architecture: LDV, data modeling, integration patterns for data.
- 3Integration Architecture: APIs, middleware, event-driven architecture.
- 4Be ready for "design a solution that meets X and Y requirements."
Prerequisites
- •Application Architect
- •Years of complex implementation experience
Focus Areas
- •Data Architecture
- •Integration Architecture
- •Sharing and Visibility
- •Development Lifecycle
Study Strategy
Treat each pillar as a mini-exam.
Use CTA scenario practice to get used to open-ended design questions.
Time management is critical.
Exam Format and First-Attempt Readiness
Most Salesforce exams test scenario-based decisions. For Salesforce Certified System Architect, focus on when to use each feature, not just terms.
- Study high-weight topics first. Then close gaps.
- Do timed question sets. Build pacing and confidence.
- Review why wrong answers are wrong. It improves scenario reasoning.
- Book the exam once your mock scores are steady.
Is the System Architect Exam Hard?
Is the System Architect Exam Hard?
System Architect has no exam of its own. You earn it automatically once you hold four credentials: Platform Developer I, Platform Integration Architect, Platform Development Lifecycle and Deployment Architect, and Identity and Access Management Architect. The hard part is the breadth, since those exams cover integration, logins and release management.
- No separate exam. The credential is granted when you hold all four required certifications.
- Four exams to pass. Platform Developer I, Integration Architect, Development Lifecycle and Deployment Architect, and Identity and Access Management Architect.
- Wide scope. Together they cover integration patterns, OAuth and single sign-on, sandbox strategy and release management.
- Check each exam's guide. Each of the four exams has its own format, pass mark and fee, listed in its official exam guide.
Pass Rate Guidance
Most people take Platform Developer I first, then the three architect exams in whatever order matches their work. Plan each one on its own and use that exam's practice tests.
System Architect Exam Format Explained
System Architect Exam Format Explained
There is no System Architect exam to book. Here is how the credential works:
How Many Questions Are Scenario-Based?
Each of the four exams uses short business scenarios. You read a requirement, such as a new partner portal login or a nightly data sync, and choose the best design.
Best Way to Pass on Your First Attempt
- Start with Platform Developer I: It gives you the Apex and data model basics that the architect exams assume.
- Take Integration Architect next if you work with APIs: It covers patterns, APIs and error handling. See the Integration Architect guide.
- Then Identity and Access Management: Learn SAML, OAuth flows, My Domain and how users are provisioned.
- Finish with Development Lifecycle and Deployment: Sandboxes, source control, testing and release planning.
System Architect: Key Concepts
Integration Patterns: Choosing the Right Approach
From the Integration Architect exam. Pick the pattern from three facts in the scenario: does a user wait for an answer, how much data is there, and which system starts the exchange. Request and Reply when the user waits. Fire and Forget with Platform Events or outbound messages when nobody waits. Batch with Bulk API for large scheduled loads. Data Virtualization with Salesforce Connect when data should stay in the other system. Callout limits matter: 100 callouts per transaction and 120 seconds in total.
Authentication Patterns: OAuth 2.0 Flows
From the Identity and Access Management exam. Web server flow when a person logs in through a browser and the app can keep a secret on its server. User-agent flow for apps that run in a browser or on a phone. JWT bearer flow for server-to-server access with no person present. Device flow for things like TVs or command-line tools with no proper keyboard. Refresh tokens let an app get a new access token without asking the user again. Each flow is set up in a Connected App or External Client App; which also controls scopes and policies.
API-Led Connectivity and Middleware (MuleSoft)
Once several systems share data, direct point-to-point links become hard to manage. Middleware sits in the middle. MuleSoft's model has three layers. System APIs talk to back-end systems. Process APIs combine data and apply business rules. Experience APIs shape data for one app or channel. This lets teams reuse the same APIs instead of building new connections for every project. In Salesforce, Named Credentials hold endpoints and login details so code never contains secrets.
Sandbox Strategy and Release Management
From the Development Lifecycle and Deployment exam. Developer sandboxes for each developer, Partial Copy for QA, Full for performance and final user testing. Keep source in Git and deploy with the Salesforce CLI or DevOps Center. Production deployments with Apex need 75% test coverage. Validate early and quick deploy within 10 days. There is no rollback button, so keep the last good version in source control and use feature flags.
Identity, SSO, and My Domain
Single sign-on lets users log in to Salesforce with the company's existing identity provider. With SAML, the company's provider (such as Okta or Entra ID) is the identity provider and Salesforce is the service provider. Salesforce can also be the identity provider for other apps. My Domain gives your org its own login URL and is required for SSO. Just-in-time provisioning creates or updates a Salesforce user the first time they log in through SSO. For customers, Experience Cloud supports social sign-on and self-registration.
Like Application Architect, System Architect has no exam of its own. It is granted once you hold the four component certifications. Platform Developer I is the only exam shared with Application Architect.
How to Pass the Salesforce System Architect Exam
Because the credential is made up of four exams, prepare for each one separately. These are the themes that show up across them.
Enterprise Integration Patterns
If the user waits, it is synchronous. If not, prefer asynchronous. If the data is huge, use Bulk API. If it shouldn't be copied, use Salesforce Connect.
Data Migration Strategy
Load parent records before children, use external IDs to link them, turn off automation that isn't needed during the load, and use Bulk API for large volumes.
Multi-Org Architecture
One org is simpler and is usually the default answer. Several orgs make sense for strict legal separation or very different business units, but they need integration between them.
Governor Limits at Scale
Design for bulk from the start. Move callouts and heavy work to Queueable or Batch Apex, and keep queries selective on large objects.
Salesforce Connect & External Objects
Use these when users need to see outside data that changes often and shouldn't be stored in Salesforce.
Is the Salesforce Certified System Architect Exam Hard?
DifficultyChallenging; plan about 8-16 weeks of focused prep.
Book When ReadyWork through timed mocks until you can explain every wrong answer before scheduling.
Use Practice, Not DumpsOriginal practice questions build skill without risking your credential.
Salesforce Certified System Architect Practice Questions (With Explanations)
Test your knowledge with these 15 sample questions.
Question 1: Which set of credentials earns you System Architect?
Key takeaway: System Architect is granted when you hold these four credentials.
Show correct answer and explanation
Correct answer: B. Platform Developer I plus the three architect exams
System Architect is granted when you hold these four credentials. There is no separate exam.
- There is no stand-alone System Architect exam.
- That list is close to the Application Architect requirements, not System Architect.
- Those credentials don't make up any architect credential.
Question 2: A partner's server needs to call the Salesforce API every hour with no person logging in. Which OAuth flow fits best?
Key takeaway: The JWT bearer flow is meant for server-to-server access.
Show correct answer and explanation
Correct answer: C. JWT bearer flow
The JWT bearer flow is meant for server-to-server access. The server signs a token with a certificate, and no password or user is needed.
- The device flow is for devices with limited input, such as TVs; and still needs a person.
- The web server flow needs a person to log in through a browser.
- The user-agent flow is for browser or mobile apps with a user present.
Question 3: Employees log in to many company apps with Okta. They should log in to Salesforce the same way. What roles do Okta and Salesforce play?
Key takeaway: The system that checks the user's identity is the identity provider, here Okta.
Show correct answer and explanation
Correct answer: C. Okta is the identity provider and Salesforce is the service provider
The system that checks the user's identity is the identity provider, here Okta. The app the user logs in to is the service provider, here Salesforce.
- Only one system authenticates the user in this setup.
- That reverses the roles. Okta is checking the login, not Salesforce.
- SSO for employees is usually SAML. OAuth is about granting apps access to data.
Question 4: When a new employee logs in to Salesforce through SSO for the first time, a user account should be created for them automatically. What feature does this?
Key takeaway: Just-in-time provisioning uses details in the SAML assertion to create or update the Salesforce user during their first SSO login.
Show correct answer and explanation
Correct answer: B. Just-in-time provisioning
Just-in-time provisioning uses details in the SAML assertion to create or update the Salesforce user during their first SSO login.
- Login flows add steps after login, such as a terms page. They are not built for creating users.
- Delegated authentication checks a password against another system. It doesn't create users.
- Permission set groups grant access to existing users.
Question 5: A company must load 3 million Contacts linked to 400,000 Accounts from an old CRM. What is the right approach?
Key takeaway: Parents must exist before children.
Show correct answer and explanation
Correct answer: D. Load Accounts with external IDs, then Contacts
Parents must exist before children. External IDs let you link Contacts to Accounts without looking up Salesforce IDs, and Bulk API handles the volume.
- Millions of single REST calls would be slow and hit API limits.
- Manual entry is impossible at this scale.
- Contacts can't link to Accounts that don't exist yet.
Question 6: Two business units have very different processes, and a regulator requires their customer data to be kept fully separate. What org strategy fits?
Key takeaway: Strict legal separation is one of the few strong reasons for multiple orgs.
Show correct answer and explanation
Correct answer: D. Separate orgs for each business unit
Strict legal separation is one of the few strong reasons for multiple orgs. Record types and apps don't separate the data itself.
- Record types change processes but keep data in the same org.
- Apps change navigation, not who can reach the data.
- Page layouts only change how records look.
Question 7: What is required before you can set up SAML single sign-on for a Salesforce org?
Key takeaway: My Domain gives the org its own login URL, which SSO needs.
Show correct answer and explanation
Correct answer: B. My Domain
My Domain gives the org its own login URL, which SSO needs. It is turned on for all orgs today.
- Encryption is not needed for SSO.
- Experience Cloud is for external sites. Employee SSO doesn't need it.
- SSO can be set up in any org. A Full sandbox is for testing.
Question 8: Order data from a warehouse system must be visible to service agents in Salesforce. It changes every few minutes and must not be stored in Salesforce. What fits?
Key takeaway: Salesforce Connect reads the data live from the other system each time it is viewed.
Show correct answer and explanation
Correct answer: B. Salesforce Connect with External Objects
Salesforce Connect reads the data live from the other system each time it is viewed. Nothing is copied into Salesforce.
- An hourly copy stores the data and can be an hour old.
- A nightly load copies the data and is up to a day old.
- Outbound messages send data out of Salesforce, not in.
Question 9: A trigger needs to send each new Order to an ERP. Calls to the ERP take several seconds. What is the best design?
Key takeaway: Triggers can't make synchronous callouts.
Show correct answer and explanation
Correct answer: A. Have the trigger queue Apex for the callout
Triggers can't make synchronous callouts. Queueable Apex runs the callout in the background and can be chained or retried.
- A manual button depends on people remembering to click it.
- Triggers aren't allowed to make synchronous callouts, and the user would wait.
- A nightly job delays every Order by up to a day, which may be too late.
Question 10: Five systems need customer data from SAP. Today each one has its own direct connection to SAP, and every change breaks something. What should the architect recommend?
Key takeaway: A single System API in front of SAP, reused by everyone; means only one connection to change when SAP changes.
Show correct answer and explanation
Correct answer: A. Reusable APIs through middleware
A single System API in front of SAP, reused by everyone; means only one connection to change when SAP changes.
- Another direct link adds to the mess.
- Nightly copies are stale and still need five integrations.
- The business still needs the data.
Question 11: Code is being deployed to production. What test coverage rule applies to Apex?
Key takeaway: Production deployments that include Apex need at least 75% overall coverage, and every trigger must be covered.
Show correct answer and explanation
Correct answer: D. At least 75% overall coverage
Production deployments that include Apex need at least 75% overall coverage, and every trigger must be covered.
- All Apex in production needs coverage, not just packages.
- Tests are required for Apex in production.
- 100% is a goal, not the rule.
Question 12: The release team wants to check that a deployment will pass in production on Monday, then deploy it fast during a short window on Wednesday. What should they use?
Key takeaway: A validated deployment can be quick deployed within 10 days without running tests again.
Show correct answer and explanation
Correct answer: A. Validate Monday, quick deploy Wednesday
A validated deployment can be quick deployed within 10 days without running tests again.
- A new change set on Wednesday would run tests during the short window.
- There is no rollback button in Salesforce.
- Running all tests makes the window longer, not shorter.
Question 13: A mobile app used by customers needs to call Salesforce on behalf of the logged-in customer and keep them logged in for weeks. What should be used?
Key takeaway: A refresh token lets the app get new access tokens without asking the user to log in again, and access stays tied to that customer.
Show correct answer and explanation
Correct answer: C. An OAuth flow with a refresh token
A refresh token lets the app get new access tokens without asking the user to log in again, and access stays tied to that customer.
- Salesforce doesn't use API keys this way, and a key in an app can be extracted.
- The username and password flow stores real passwords and is not recommended.
- A shared user loses the link between actions and the real customer.
Question 14: Where should an Apex callout get the endpoint URL and login details for an outside system?
Key takeaway: Named Credentials store the URL and authentication securely, and Salesforce adds the login details to each call for you.
Show correct answer and explanation
Correct answer: A. A Named Credential
Named Credentials store the URL and authentication securely, and Salesforce adds the login details to each call for you.
- Custom Labels are for translations, not secrets.
- A text field exposes the secret to anyone who can read the record.
- Hard-coded secrets can be read by anyone with code access and need a deployment to change.
Question 15: Which tool should a team use as the source of truth for their org's metadata?
Key takeaway: In source-driven development, Git holds the real version of the metadata.
Show correct answer and explanation
Correct answer: C. A version control system like Git
In source-driven development, Git holds the real version of the metadata. Orgs are built and updated from it.
- Sandboxes get refreshed and lose work.
- Production changes all the time and has no history of who changed what.
- A spreadsheet isn't the metadata and quickly goes out of date.
Get the Full Question Bank
Most candidates book once they can explain every wrong answer on a full mock.
If you’re planning to test this quarter, aim to complete full mocks at least 10–14 days before your exam date.
Contact us for more information on our full 60-question mock exams and a personalized study plan. Use the contact form.
Request Mock Exams & Study PlanSalesforce Certified System Architect Exam FAQs
- What is covered on the Salesforce Certified System Architect exam?
- This page shows the section-wise exam weightage so you know exactly which topics carry the most weight. Use the exam topics and practice questions above to align your study with the official outline.
- What is System Architect?
- System Architect is part of the Technical Architect path. It focuses on data architecture, integration architecture, sharing and visibility, and development lifecycle.
- What certifications do I need before System Architect?
- You need Application Architect and multiple other certifications. System Architect is advanced-level and requires years of complex implementation experience.
- Are there free practice questions for the Salesforce Certified System Architect exam?
- Yes. This page includes free sample practice questions with explanations. Use them alongside the current official documentation.
- How do I prepare for the Salesforce Certified System Architect certification?
- Use the exam tips, prerequisites, and study strategy on this page. Focus first on the highest-weighted sections, then take the sample practice questions. Schedule the exam when you consistently score well on practice tests.
What to Do After System Architect
Once you hold System Architect and Application Architect, the next step is Technical Architect (CTA):
Honest Cert Breakdown
Difficulty: Expert
5/5Requires all four domain exams (Data, Sharing, Identity, DevOps) plus a live board review for CTA. This is the hardest certification path in the Salesforce ecosystem.
Salary Range
$135,000–$185,000 / year
US average for certified professionals • Updated Summer '26 • Source: Salesforce Talent Ecosystem
Is it worth it?
The highest non-CTA credential. Commands a significant salary premium and is a prerequisite for Technical Architect review. Long path, plan 12–24 months.
Multi-exam credential
System Architect needs four certifications: Platform Developer I and three architect exams. There is no extra exam at the end. The credential is added to your Trailhead profile once all four are active. You need both System Architect and Application Architect before the CTA review board.
The Four Required Exams
Platform Developer I
Apex, SOQL, triggers, testing and the data model. The base the three architect exams build on. It also counts toward Application Architect.
View Platform Developer I Study Guide →Integration Architect
Choosing integration patterns, picking the right API, planning for failures, and deciding when to use middleware.
View Integration Architect Study Guide →Identity & Access Management Architect
Single sign-on with SAML, OAuth flows, Connected Apps, My Domain, and how users are created and kept up to date.
View Identity & Access Management Architect Study Guide →Dev Lifecycle & Deployment Architect
Sandbox plans, source control, testing, CI/CD pipelines and release management.
View Dev Lifecycle & Deployment Architect Study Guide →Recommended Study Order
Platform Developer I. Start here. The architect exams assume you can read Apex. Know the governor limits and understand the data model.
Integration Architect. Patterns, APIs, error handling and middleware. It builds directly on what you learned about callouts and async Apex in Platform Developer I.
Identity and Access Management Architect. SAML, OAuth and user provisioning are a world of their own, so give this exam focused time. Integration work helps, since OAuth shows up in both.
Dev Lifecycle and Deployment Architect. Many people finish here, because release planning is easier to think about once you have seen the other areas.
What the System Architect Credential Signals
Technical architecture depth
Shows you can design how Salesforce connects to other systems, how people log in, and how changes reach production safely.
CTA prerequisite
System Architect (plus Application Architect) is required before applying for the Certified Technical Architect Board Review, the highest Salesforce credential.
Partner tier impact
Salesforce consulting partners count System Architect credentials toward partner tier requirements, making holders especially valuable to employers.
Career premium
System Architect holders typically qualify for senior architect and principal architect roles commanding significant salary premium over standard certification holders.
Frequently Asked Questions
- What is the Salesforce System Architect credential?
- System Architect is a credential you earn by holding four certifications: Platform Developer I, Integration Architect, Identity and Access Management Architect, and Development Lifecycle and Deployment Architect. There is no separate System Architect exam. Once all four are active, the credential is added to your Trailhead profile.
- What order should I take the System Architect exams?
- Most people take Platform Developer I first, because the architect exams assume you know Apex and the data model. After that. Pick the architect exam closest to your day job. Many start with Integration Architect, then Identity and Access Management, and finish with Development Lifecycle and Deployment.
- How long does it take to earn the System Architect credential?
- It depends on your experience. Many people plan 6 to 10 weeks of study per architect exam, which adds up to roughly 6 to 12 months for all four. There is no deadline, and each exam you pass shows on your Trailhead profile straight away.
- What is the difference between System Architect and Application Architect?
- System Architect covers how Salesforce connects to everything else: integrations, logins and identity, and how changes are released. Application Architect covers what is built inside Salesforce: the data model, sharing, and declarative and code-based development. You need both before you can go for Certified Technical Architect (CTA).
- Do any exams count toward both System Architect and Application Architect?
- Yes, one. Platform Developer I counts toward both. Data Architect and Sharing and Visibility Architect are part of Application Architect only, and Integration, Identity and Access Management, and Development Lifecycle are part of System Architect only. So if you want both credentials, you need seven different certifications in total.
Compare Certifications
Practice for Each Domain Exam
Free practice questions for every domain exam in the System Architect credential path.
What Comes After This Certification?
After System Architect, consider: Application Architect, the full architect path, or Technical Architect (CTA).
Topic Difficulty Heatmap
Which topics are a gimme vs which ones trap confident candidates. Use this to prioritise your final-week revision. These are our own topic groupings for study planning, not the official exam sections, those and their weightings are in the credential's exam guide.
| Topic | Difficulty | Study Tip |
|---|---|---|
| Data Architecture | Hard | Combines Data Architect topics. Know the cross-domain implications. |
| Integration Architecture | Hard | Same as Integration Architect, pattern selection and trade-offs. |
| Sharing and Visibility | Trap ⚠ | Sharing model and visibility, often scenario-based with multiple correct-looking answers. |
| Development Lifecycle | Moderate | Release and environment strategy, standard with architect lens. |
Difficulty based on analysis of common candidate errors across each exam section.
Ready to Test Your Knowledge?
Try the System Architect free practice exam, scored with full explanations.
System Architect Free Practice Exam →Fast Facts: System Architect Actually Focus Areas
- Cross-domain thinking: The exam tests how identity, integrations, and deployment decisions interact, not each in isolation.
- Governance at scale: Org strategy, sandboxes, release management, and DevOps processes across large enterprise Salesforce implementations.
- Security architecture: OAuth flows, SAML, SSO, Named Credentials, and connected app permissions, not just configuration, but architectural trade-offs.
High-Weight Exam Sections to Prioritise
Governance and Integrations/Identity together account for 62%, prioritise these first.
Core Topics You Must Master
For each topic, understand not just what it is but when to recommend it vs alternatives.
- OAuth and SAML flows: Web Server, User-Agent, JWT Bearer Token, SAML Assertion. Know which to recommend based on scenario constraints.
- CI/CD and DevOps: Sandbox strategy, scratch orgs, change sets vs SFDX vs metadata API deployments, release management governance.
- Heroku architecture: When to use Heroku vs Salesforce platform, data residency decisions, Heroku Connect sync strategy.
- Multi-org strategy: When to use one org vs multiple, sharing data across orgs, connected apps and external objects.
How to Know You’re Ready
The System Architect exam tests broad architectural judgement under time pressure:
75%+ on 3 timed full mocks, each covering all domains
Scenario questions will combine identity + integration + governance in a single question. If you can only answer each topic in isolation, you are not yet ready.
3 Concepts That Fail Most System Architect Candidates
These are not the hardest topics; they are the ones where candidates are most confidently wrong. Learn the distinction early.
1. System Architect Role Credential: Requires Four Domain Exams
The System Architect credential requires four certifications: Platform Developer I, Integration Architect, Identity and Access Management Architect, and Development Lifecycle and Deployment Architect. There is no separate "System Architect exam." Candidates study for System Architect as a single test, understand that each domain exam is a standalone test and all four are required before the credential is awarded.
2. API Rate Limits vs Concurrency Limits: Volume vs Parallelism
API Rate Limits cap the total number of API calls per 24 hours (org-based). Concurrency Limits cap the number of simultaneous long-running API requests (5 for Apex REST). Candidates troubleshoot integration failures by increasing API rate limits, when errors occur under moderate volume but with complex queries, concurrency limits are more likely the cause.
3. Event-Driven Architecture: When to Use Platform Events Over Direct Integration
Platform Events decouple publishers (senders) from subscribers (receivers), the publisher does not need to know who is listening or whether they are available. Direct API calls couple the caller to the called system (if the external system is down, the call fails). Candidates use direct callouts for all real-time data sharing, the exam expects Platform Events when decoupling, buffering, or fan-out (one event, multiple subscribers) is needed.
FAQs From Candidates
- What is the Salesforce System Architect credential?
- The Salesforce Certified System Architect credential is an architect-level certification that validates knowledge of identity and access management, integrations, environment management, and governance. It is one of the two credentials (with Application Architect) required to earn the broader System and Application Architect designation on the path to CTA.
- What are the highest-weight System Architect exam sections?
- Governance and Development Lifecycle (34%) and Integrations and Identity (28%) together account for 62% of the System Architect exam. These two sections are the most critical to master before attempting the exam.
- What certifications feed into the System Architect credential?
- The System Architect credential is earned by completing: Identity and Access Management Architect, Development Lifecycle and Deployment Architect, and Heroku Architect (or equivalent). Each can be studied and sat independently before earning the combined credential.
- How hard is the Salesforce System Architect exam?
- The System Architect exam is very challenging. It tests cross-domain knowledge spanning Salesforce security model, OAuth flows, CI/CD pipelines, and multi-cloud architecture. Most successful candidates have 5+ years of Salesforce experience and multiple domain certifications before attempting it.
- What concepts do most System Architect candidates get wrong?
- The most commonly misunderstood topics for the System Architect exam are: (1) System Architect Role Credential: Requires Four Domain Exams; (2) API Rate Limits vs Concurrency Limits: Volume vs Parallelism; (3) Event-Driven Architecture: When to Use Platform Events Over Direct Integration. Candidates are most confidently wrong on these. Learn the distinctions early to avoid losing marks on questions you expect to get right.
- Why do most System Architect candidates fail questions about System Architect Role Credential?
- The System Architect credential requires passing all four Domain Architect exams: Data Architect, Integration Architect, Sharing & Visibility Architect, and Development Lifecycle & Deployment Architect. There is no separate "System Architect exam." Candidates study for System Architect as a single test, understand that each domain exam is a standalone test and all four are required before the ...
- Why do most System Architect candidates fail questions about API Rate Limits vs Concurrency Limits?
- API Rate Limits cap the total number of API calls per 24 hours (org-based). Concurrency Limits cap the number of simultaneous long-running API requests (5 for Apex REST). Candidates troubleshoot integration failures by increasing API rate limits, when errors occur under moderate volume but with complex queries, concurrency limits are more likely the cause.
- Why do most System Architect candidates fail questions about Event-Driven Architecture?
- Platform Events decouple publishers (senders) from subscribers (receivers), the publisher does not need to know who is listening or whether they are available. Direct API calls couple the caller to the called system (if the external system is down, the call fails). Candidates use direct callouts for all real-time data sharing, the exam expects Platform Events when decoupling, buffering, or fa...
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