ASPM, CNAPP, CSPM: making sense of the cloud security acronyms

Application and cloud security have drowned in acronyms: CSPM, ASPM, CNAPP, not to mention SAST, SCA, CIEM or KSPM. Behind the jargon are very real but heavily overlapping scopes. Here’s a simple way to decide what you actually need.

CSPM: cloud posture

CSPM (Cloud Security Posture Management) watches the configuration of your cloud environments. Its job: catch misconfigurations before they become incidents.

Publicly exposed storage buckets
Over-permissive security groups
Disabled encryption, missing audit logs
Drift from the CIS benchmarks

CSPM is usually agentless: it connects through a read-only role (for example a cross-account IAM role on AWS) and inspects the provider’s API. Nothing to install on your machines.

ASPM: application posture

ASPM (Application Security Posture Management) doesn’t look at the cloud, but at code and the delivery chain. It consolidates application-security signals into a single view:

SAST: static source code analysis
SCA: open-source dependency analysis
Secret detection: keys and tokens committed by mistake
IaC scanning: Terraform, CloudFormation, Kubernetes
SBOM: software inventory (CycloneDX, SPDX)

The point of ASPM isn’t to scan (plenty of tools already do) but to aggregate, deduplicate and prioritise the output of all those scanners. That’s the difference between “1,000 alerts” and “the 7 that matter”.

CNAPP: all-in-one, from code to runtime

CNAPP (Cloud-Native Application Protection Platform) is the category that brings the others together. The term, popularised by Gartner, describes a platform that covers security from code to runtime:

Code & CI/CD (the ASPM scope)
Cloud (the CSPM scope)
Runtime (workloads, containers, production servers)

The guiding idea: a vulnerability doesn’t live in a silo. A vulnerable dependency (AppSec signal) deployed on an internet-facing machine (cloud signal) and actually called at runtime (runtime signal) is far more critical than the same dependency buried in dead code. Only a platform that correlates these three layers can tell the difference.

In short

Acronym	Scope	Connection
CSPM	Cloud configuration	Read-only role (agentless)
ASPM	Code, dependencies, CI/CD	OAuth on the repository
CNAPP	All three + runtime	All three + optional agent

Why a unified platform

Stacking a CSPM tool, an ASPM tool and a runtime tool recreates the very problem these categories claim to solve: duplicate alerts, incompatible risk scores and no common priority.

That’s exactly the bet behind Cairn Security: a single platform covering all three axes, aggregating findings in one repository, prioritising them with a score that combines EPSS, CISA KEV, exposure and reachability, then letting an AI-driven agentic SOC cut the noise and prepare the fixes.

Security, mapped from code to cloud.