Build Applications Programmatically on the Salesforce Platform (DEX450)
The Build Applications Programmatically on the Salesforce Platform (DEX450) course is designed for programmatic developers who need to write custom business logic and user interfaces using Apex and Visualforce. It solves the challenge of transitioning from declarative customization to programmatic development on a multi-tenant platform. Targeting aspiring Salesforce developers, it aligns with the growing demand where over 75,000 certified developers exist globally, and US job postings have surged past 31,000.
This course prepares learners for the Salesforce Certified Platform Developer I certification, covering core exam domains like process automation, Apex programming, and Visualforce. Koenig Solutions offers official vendor-authorized courseware and Guaranteed-to-Run dates, ensuring structured preparation. Completing this training enables developers to build scalable, enterprise-grade applications and advance into high-demand roles within the expanding Salesforce ecosystem.
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Course Overview
The Build Applications Programmatically on the Salesforce Platform (DEX450) course by Salesforce is designed to prepare developers for the Salesforce Certified Platform Developer I certification exam. This intensive training targets aspiring Salesforce Developers, Application Architects, and Software Engineers who aim to build custom business logic and user interfaces using the Lightning Platform. With over 150,000 Trailblazer community members actively pursuing developer credentials, demand for certified Platform Developers remains strong across industries leveraging Salesforce’s ecosystem. The course equips learners with essential skills to extend the Salesforce Platform programmatically, focusing on real-world development challenges faced in enterprise environments.
Participants engage directly with core Salesforce development tools including Apex, SOQL (Salesforce Object Query Language), Lightning Web Components (LWC), Visualforce, Salesforce CLI, and the Salesforce Extension Pack for Visual Studio Code. The hands-on labs are conducted within a Trailhead Playground org—a dedicated Salesforce development environment—where students configure data models, write Apex triggers and classes, and build dynamic user interfaces using LWC and Visualforce. A key project involves developing a full-stack application for DreamHouse Realty, where learners implement features like property management and map visualization, integrating backend logic with frontend components. These exercises emphasize best practices in governor limit management, transaction control, and declarative-programmatic integration within Salesforce’s multi-tenant architecture.
This course directly prepares candidates for the Salesforce Certified Platform Developer I credential, a globally recognized certification validating expertise in Apex and Visualforce development. According to Salesforce’s 2023 Career Path report, certified Platform Developers see an average salary increase of 20–30% post-certification, with mid-level roles averaging $95,000 annually in the U.S. Koenig Solutions enhances this learning path with Guaranteed-to-Run batches, official Salesforce courseware, and access to expert-led 1-on-1 mentoring sessions. Completing DEX450 empowers developers to design scalable, high-performance applications on the Salesforce Platform, positioning them for advanced roles in cloud development, DevOps, or solution architecture within the expanding Salesforce economy.
What You'll Learn
Skills You'll Gain
Prerequisites
- Solid understanding of fundamental Salesforce concepts and features, essential for mastering the Build Applications Programmatically on the Salesforce Platform (DEX450) course by Salesforce.
- At least one year of programming experience in Java or another object-oriented language, which helps in developing custom applications on the Salesforce platform.
- Basic knowledge of data modeling for relational databases, crucial for designing efficient Salesforce data structures.
- Fundamental SQL skills to manage and query data effectively within Salesforce environments.
- Basic HTML proficiency to customize Salesforce user interfaces and enhance user experience.
- Basic JavaScript understanding to develop dynamic and interactive Salesforce applications.
Certification Exam
Everything you need to know about the DEX450 certification exam
What's Included in Your Training
Every enrollment comes packed with resources to maximise your learning and exam success
Exam Preparation Materials
Practice Test Questions (200+)
Certificate of Completion
Post-Training Support (30 days)
Session Recording Access
Free Rescheduling (7+ days notice)
Career Outcomes
of DEX450 certified professionals report career advancement within 6 months
Salary Impact
Average salary increase reported after obtaining the DEX450 certification
*Source: Glassdoor / LinkedIn 2025
Job Roles
- Salesforce Platform Developer
- Apex Developer
- Salesforce Technical Consultant
- Lightning Component Developer
- Salesforce Integration Developer
- Senior Salesforce Developer
Companies Hiring
and 5,000+ organizations worldwide seeking DEX450 certified professionals
Course Student Reviews
Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.
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★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
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“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
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“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
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“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
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“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
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“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
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“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
-
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified
-
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified
-
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
Frequently Asked Questions
Everything you need to know about the DEX450 training course
Is the Salesforce certification exam included in the Build Applications Programmatically on the Salesforce Platform (DEX450) course, and what is the exam fee?
What training formats are available for the Build Applications Programmatically on the Salesforce Platform (DEX450) course at Koenig Solutions?
How long is lab access provided, and what environment is used for Build Applications Programmatically on the Salesforce Platform (DEX450) training?
What is Koenig's rescheduling and cancellation policy for the Build Applications Programmatically on the Salesforce Platform (DEX450) course?
What is the format, question count, passing score, and time limit for the Build Applications Programmatically on the Salesforce Platform (DEX450) certification exam?
How long is the Salesforce Platform Developer certification valid, and what is the renewal process?
What post-training support does Koenig provide after completing the Build Applications Programmatically on the Salesforce Platform (DEX450) course?
What are the prerequisites or recommended experience for enrolling in the Build Applications Programmatically on the Salesforce Platform (DEX450) course?
What career impact and salary increase can one expect after earning the Build Applications Programmatically on the Salesforce Platform (DEX450) certification?
How does instructor-led Build Applications Programmatically on the Salesforce Platform (DEX450) training compare to self-study for exam preparation?
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