Web applications remain the top attack vector for breaches according to Verizon’s 2025 Data Breach Investigations Report. Penetration testing is the preferred method by which organizations gauge the security of their web applications – but not all penetration tests are created equal. Some services aren’t actually penetration tests at all.

From automated scans to ongoing testing platforms, there’s a wide range of services labeled as penetration tests. But the difference in depth, quality and outcomes can be huge. In fact, what one vendor calls a ‘pen test’ might be little more than a basic vulnerability scan, while another might offer a detailed manual assessment backed by skilled ethical hackers.

In this article, we’ll break down the different types of penetration testing services available, and explain how they differ in terms of method and value so you can choose the right approach to suit your needs.

Why do you need a penetration test?

The lack of clarity around what a pen test actually refers to can make it hard for organizations to choose the right solution. That’s why, before diving into the types of testing available, you should take a step back and ask one simple question: Why are you running a penetration test in the first place?

Your core motivation plays a pretty big role in determining what kind of test you actually need. A one-size-fits-all approach rarely works in today’s threat landscape.

To help get you thinking, here are some of the most common reasons organizations seek out pen testing:

• Meeting compliance requirements: Many organizations run annual pen tests to meet compliance obligations, like PCI DSS, ISO 27001, SOC 2, or HIPAA. In these cases, the goal is to satisfy auditors or regulatory bodies by proving that systems have been tested for known vulnerabilities. While this approach may technically meet requirements, it doesn’t always provide meaningful insights and could still leave you vulnerable.
• Peace of mind: Security leaders might request a pen test for simple reassurance – for example, to validate that recent changes haven’t introduced new vulnerabilities. If this sounds like you, you’ll need to opt for a thorough and customized approach to uncover hidden risks. 
• Improving overall security posture: More mature organizations use penetration testing strategically to identify weaknesses and prioritize remediation. Rather than just getting a one-off report, the goal here is to really understand how an attacker would approach your environment and how your team can respond effectively. This type of approach usually requires a more in-depth, ongoing engagement.

The many faces of penetration testing

Once you’ve got some clarity on why you’re doing a pen test in the first place, the next step is to understand what kind of test will deliver the results you’re looking for. Here’s an overview of the different types of tests to consider:

Automated scans

Often marketed as penetration tests, fully automated scans are often just vulnerability scans dressed up in a fancier-sounding package.

Their speed, scalability and affordability make them attractive to organizations looking to meet compliance requirements. But they offer limited depth, and might even include false positives without the context or prioritization that real-world testing provides. If you want to do anything more than just tick a box, automated scans alone are not enough.

Manual penetration tests

This is what most people think of when we talk about penetration tests. With manual testing, skilled human testers simulate real-world attacks, manually exploiting vulnerabilities to expose how an attacker may move through your environment. As a result, these tests provide deep, contextual findings that go far beyond simple automation.

Manual testing is ideal for high-risk applications and critical infrastructure. However, it is time-intensive and comes with a higher price tag.

Hybrid one-off engagements

A hybrid test blends automated scanning with expert validation to offer broader coverage and more meaningful results than automation alone. As a one-off test, these are generally time-limited and scoped to test a specific app or environment.

They can strike a good balance between speed, cost and insight, which is why they’re appealing for routine annual assessments. That said, their snapshot nature poses a risk, potentially leaving emerging vulnerabilities unnoticed between tests.

Penetration Testing as a Service (PTaaS)

Penetration Testing as a Service (PTaaS) has been designed to meet the need for more agile, ongoing security testing. Rather than waiting for a once-a-year assessments, PTaaS enables continuous, on-demand testing that aligns with faster development cycles and modern DevOps practices. It allows organizations to trigger tests as needed and receive faster, more actionable feedback.

Combined with built-in remediation support and retesting, PTaaS offers a better return on investment over time. It’s best suited for mature organizations looking to embed security into the software development lifecycle and maintain an adaptive, always-on testing strategy.

How to choose the right test for your needs

Hopefully now you have a clear understanding of why not every test labeled a ‘penetration test’ delivers the same level of insight. That’s why choosing the right approach comes down to understanding your specific goals, your organization’s risk profile, and how mature your security program is.

Point-in-time tests offer a snapshot – which may be useful but is quickly outdated. In fast-moving environments where new code is shipped regularly and infrastructure changes are constant, these reports can become irrelevant within weeks. That’s where longer-term solutions like PTaaS offer a more strategic alternative, allowing security to scale with your development cycle and risk landscape.

Ultimately, selecting the right type of pen test is about making sure your investment actually helps improve security. And that starts with choosing a solution that matches your needs, not just the label on the service.

A balanced, long-term approach to application security

If your goal is to truly reduce risk – not just check a box – then adopting a more flexible, long-term testing strategy is essential. That’s where a solution like Outpost24’s CyberFlex comes in.

By combining External Attack Surface Management (EASM) with Penetration Testing as a Service (PTaaS), CyberFlex gives you complete oversight of your internet-facing applications, with the ability to categorize, prioritize, and thoroughly test the ones that matter most. This human-led, on-demand approach allows you to catch risks early, improve remediation, and stay ahead of evolving threats.

Find out how CyberFlex can help you stay secure, not just compliant. Request a live demo today.

Brought to you by:

Beth Grayson Cybersecurity writer

Beth Grayson is a cybersecurity writer based in the UK, with 3+ years’ experience writing about B2B, technology and cybersecurity topics.