Splunk vs Datadog in 2026: Side-by-Side for Certification and Career

Splunk and Datadog dominate two overlapping worlds. Splunk owns the SIEM and log-analytics conversation in security operations. Datadog owns the infrastructure and application performance monitoring conversation in DevOps. Choosing which one to certify in is really choosing which career track you are on - this article makes the tradeoff explicit.

§What each product is best at

§Certifications recruiters actually filter on

• Splunk Core Certified Power User - entry filter for most SOC roles
• Splunk Enterprise Certified Admin - operational credential for Splunk-heavy shops
• Splunk Certified Cybersecurity Defense Analyst - replaces old ES Certified Admin
• Datadog Certified Practitioner - now a standard filter for DevOps + SRE
• Datadog Certified Foundations - foundational; useful for career switchers

§Career paths

If you work in security operations, threat hunting, or fraud analytics, Splunk skills accelerate you toward senior analyst, detection engineer, and SOC lead. If you work in platform, SRE, or DevOps, Datadog skills accelerate you toward observability engineer and platform lead. Cross-training is possible but usually a second-year move.

§Salary snapshot - 2026 median USD

§How to actually learn each stack

Splunk

• Splunk Fundamentals 1 and 2 (free eLearning) - get comfortable with SPL
• Boss of the SOC - Splunk''s own hands-on threat hunt
• Home lab with Splunk Free ingesting Sysmon, five detections a week

Datadog

• Datadog Learning Center - free labs mirror the Practitioner exam directly
• Deploy the agent to a small Kubernetes cluster (kind or k3s) and instrument three services
• Read the SRE workbook chapter on golden signals - maps 1-to-1 to dashboards

§Frequently asked questions

Is Splunk still relevant in 2026?

Yes. The Cisco acquisition stabilised the roadmap, and Splunk remains dominant in security operations at large enterprises. Rumours of its decline have been consistent and consistently wrong for a decade.

Is Datadog''s certification worth it?

The Datadog Certified Practitioner is a standard filter for DevOps and SRE roles at product companies. If you already use Datadog daily, it is one of the highest ROI exams at just a few hours of dedicated prep.

Can I learn both at once?

You can, but you will not go deep in either. Better path: pick the one that matches your day job, get one certification and one lab under your belt, then cross-train.

How much do these certifications cost?

Splunk exams currently sit at $130 each. Datadog Certified Practitioner is $150 in 2026. Both are inexpensive compared to the salary lift they unlock.