API breaches now account for 94% of web-layer attacks. The API security market is projected to hit $58 billion by 2034. Hiring managers are actively filtering for certified professionals. Two certifications come up repeatedly in this space: the Certified API Security Professional (CASP) from Practical DevSecOps and the Certified API Security Analyst (CASA) from APIsec University.
They share a similar acronym space. They do not serve the same audience. Here’s the straight breakdown.
What Is Certified API Security Professional (CASP)?
The Certified API Security Professional (CASP) is offered by Practical DevSecOps, a cybersecurity training and certifications company specializing in hands-on DevSecOps, AI Security, and Application Security. Practical DevSecOps has trained over 12,500+ security professionals and is trusted by organizations including Roche, Accenture, IBM, PWC, and Booz Allen Hamilton.
CASP is a practitioner-level, hands-on certification built for security engineers, AppSec analysts, penetration testers, and developers who work with APIs daily. The course runs across 9 chapters covering authentication attacks, authorization flaws, OWASP API Top 10, OAuth 2.0, JWT exploitation, CI/CD pipeline security, and real-world defense patterns using API gateways.
Certified API Security Professional
Secure REST, GraphQL & SOAP APIs: OWASP Top 10 + hands-on testing.
Exam format: 5 task-based challenges in a 6-hour live exam, followed by a 24-hour report submission. No multiple choice. You either solve it or you don’t.
Cost: $899 | Validity: Lifetime | CPE points: 36
What Is CASA?
The Certified API Security Analyst (CASA) is offered by APIsec University. It is an entry-level, knowledge-based certification designed to test familiarity with API security concepts, primarily drawn from the OWASP API Security Top 10.
Exam format: 100 multiple-choice questions, 2-hour time limit, 80% pass rate required.
Cost: $125 | Retake fee: $75 | Validity: No expiry (as of current information)
Side-by-Side Comparison: CASP vs. CASA
| Feature | CASP | CASA |
| Provider | Practical DevSecOps | APIsec University |
| Level | Practitioner / Advanced | Entry-level |
| Exam Type | Hands-on, task-based (6 hrs) | Multiple choice (2 hrs) |
| Lab Access | 60 days, browser-based | None |
| Course Depth | 9 chapters, 70% hands-on | OWASP API Top 10 course |
| Cost | $899 | $125 |
| CPE Points | 36 | Not specified |
| Validity | Lifetime | Lifetime |
| Target Audience | Security engineers, AppSec, pentesters | Beginners, awareness-level learners |
| CI/CD Integration | Yes. SAST, DAST, SCA in pipelines | No |
| Salary Impact | $141,000–$190,000+ | Entry-level range |
The Real Difference: Proof vs. Awareness
CASA tests whether you know API security concepts. CASP tests whether you can execute under pressure. That distinction matters enormously to hiring managers.
CASP graduates have to attack live APIs, exploit authentication flaws, forge JWT tokens, find BOLA vulnerabilities, and write a professional security report. That’s the same workflow used in real penetration tests and security audits. Employers at organizations like Roche, IBM, and Accenture recognize this because Practical DevSecOps already trains their teams.
CASA is a solid starting point for someone new to the field who wants a structured introduction to OWASP API risks. It’s affordable, accessible, and low-barrier. But it won’t get you past a technical screening for a senior AppSec or security engineering role.
Career and Salary Impact
CASP-certified professionals report a 15–20% increase in pay post-certification. The numbers back this up:
- Non-certified API security professionals typically earn $80,000–$110,000
- CASP-certified professionals earn $141,000–$190,000+
- Senior API Security Architects reach $195,000–$240,000
The API security market is growing at a 31% CAGR, and the talent pool is not keeping pace. Professionals with hands-on, verifiable credentials are not chasing job postings. They’re receiving them.
CASA, as an entry-level credential, positions you for junior analyst or awareness-level roles. It does not carry the same weight in senior hiring decisions.
Who Should Choose Certified API Security Professional (CASP)?
- Security engineers who want to move into AppSec or API security roles
- Penetration testers adding API-specific skills to their toolkit
- DevSecOps engineers building security into CI/CD pipelines
- Developers who want to write and ship secure APIs
- Professionals targeting $140K+ roles at enterprise organizations
Who Should Choose CASA?
- Beginners building foundational API security knowledge
- Developers or QA engineers who want a low-cost introduction to OWASP API risks
- Professionals who plan to pursue CASP or ASCP afterward
Conclusion
If you’re an experienced security professional, the Certified API Security Professional (CASP) course is the clear choice. The exam format alone. A live, task-based, 6-hour challenge with a written report. Signals to employers that you’ve done the work, not just read about it. The course depth, lab access, CI/CD integration, and lifetime credential make it a strong long-term investment.
CASA is a reasonable first step. It is not a career differentiator.
The API security market is paying top dollar for professionals who can stop breaches, not just describe them. CASP is built for that standard.
Certified API Security Professional
Secure REST, GraphQL & SOAP APIs: OWASP Top 10 + hands-on testing.
FAQs
Yes, significantly. CASP requires you to solve 5 live, task-based challenges in 6 hours and submit a written report. CASA is 100 multiple-choice questions in 2 hours. The difficulty gap reflects the difference in target audience and career impact.
You should have a basic understanding of Linux commands and OWASP Top 10. Application development knowledge helps but is not required. CASP is designed for working security professionals, not complete beginners.
No. CASP is a lifetime credential. Once earned, it stays on your record permanently. No renewal fees, no re-examination cycles.
CASP, by a wide margin. Its hands-on exam format, CI/CD coverage, and recognition by organizations like Roche, IBM, Accenture, and Booz Allen Hamilton make it the preferred credential for senior AppSec, security engineering, and penetration testing roles.
Only if you’re entirely new to API security and need a structured introduction to OWASP API risks. If you already have security experience, go directly to CASP. The course content covers foundational concepts in Chapter 1 before moving into advanced attack and defense techniques.
