SIDE BY SIDE · FACTS ONLY

Defender EASM vs Sevco: asset inventory facts side by side

SHORT ANSWER

Defender EASM describes 2 of the five approaches on the pages we read and Sevco describes 2; they differ on CAASM aggregation, External attack surface management and Exposure management. On collection, Defender EASM works without new agents and Sevco works without new agents. Many estates run two of these approaches together, so the question is often which pair, not which one; we do not score either.

By The Inventory Desk · CAASM Finder · Published 2026-10-11

Desk research from public vendor pages read on 27 September, 11 October and 15 October 2026. Profiles follow our published method; we did not run the products.

How do their approaches compare?

Top bar: Microsoft Defender EASM
Lower bar, lighter: Sevco Security

Full bar: described on the vendor's pages we read
Hatched bar: described with a condition (another product, a higher tier, or part of the approach)
Stub: not in our sources (it may exist; we did not find it)

The bars show what each vendor's own pages describe, or how your answers weigh the five approaches. They are not a measure of how well a product works.

What are the facts, side by side?

From each vendor's own pages. Differs marks rows where the recorded status or check value differs.
Fact	Microsoft Defender EASM	Sevco Security
Positioning	Microsoft's external attack surface management service, run as an Azure resource, with a prebuilt inventory, recursive discovery from seeds and billing on the Azure bill.	Sevco describes itself as an exposure management platform that centralizes vulnerabilities and security control gaps, prioritizes them, and automates and validates remediation, with an accurate asset inventory and asset intelligence as its foundation.
Deployment	An Azure resource. Cross-tenant resource access, including Azure Lighthouse, is not supported. Source: Microsoft Learn: Defender EASM overview · Read 27 Sep 2026	Installs in 30 minutes or less with no agent, scanner or network monitor, and with easy remote setup. Source: Sevco Security platform · Read 15 Oct 2026
CAASM aggregationDiffers	Not in our sources Not described on the pages we read.	Described Aggregates and correlates data from existing IT and security tools behind and in front of the firewall; an Asset Correlation Engine handles correlation, reconciliation and deduplication. Source: Sevco Security platform · Read 15 Oct 2026
Agent-based inventory	Not in our sources Not described on the pages we read.	Not in our sources Not described on the pages we read.
External attack surface managementDiffers	Described A prebuilt inventory for many organisations plus recursive discovery from seeds you supply. Source: Microsoft Learn: what is discovery · Read 27 Sep 2026	Not in our sources Not described on the pages we read.
CMDB-centred inventory	Not in our sources Not described on the pages we read.	Not in our sources Not described on the pages we read.
Exposure managementDiffers	With a condition Dashboards for vulnerabilities, compliance and hygiene on external assets; remediation happens downstream through Log Analytics and Azure Data Explorer. Source: Microsoft Learn: data connections · Read 27 Sep 2026	Described Describes itself as an exposure management platform that centralizes vulnerabilities and security control gaps, prioritizes them, and automates and validates remediation. Source: Sevco Security home page · Read 15 Oct 2026
Servers and network devices	Not in our sources	Not in our sources
Cloud workloads	Not in our sources	Not in our sources
SaaS applications	Not in our sources	Not in our sources
Identities as assets	Not in our sources	Not in our sources
Off-network laptops	Not in our sources	Not in our sources
OT and IoT devices	Not in our sources	Not in our sources
Internet-facing discoveryDiffers	Matches Prebuilt inventory and recursive discovery from seeds. Source: Microsoft Learn: what is discovery · Read 27 Sep 2026	Not in our sources
Offers its own agent	Not in our sources	Not in our sources
Works without new agents	Matches An Azure service that discovers from seeds and a prebuilt inventory. Source: Microsoft Learn: Defender EASM overview · Read 27 Sep 2026	Matches No agent, scanner or network monitor to install. Source: Sevco Security home page · Read 15 Oct 2026
Merges records from several sourcesDiffers	Not in our sources	Matches An Asset Correlation Engine handles correlation, reconciliation and deduplication. Source: Sevco Security platform · Read 15 Oct 2026
Feeds or updates a CMDB	Not in our sources	Not in our sources
Cross-source queries and reportsDiffers	Partly Dashboards for vulnerabilities, compliance and hygiene. Source: Microsoft Learn: Defender EASM overview · Read 27 Sep 2026	Not in our sources
Workflows, tickets or actions	Partly Data connections to Log Analytics and Azure Data Explorer trigger remediation actions downstream. Source: Microsoft Learn: data connections · Read 27 Sep 2026	Partly Action Center offers pre-defined automated remediation, validated on the asset rather than when a ticket closes. Source: Sevco Security home page · Read 15 Oct 2026
Price or pricing basis publishedDiffers	Partly Billable assets are defined (approved host:IP combinations, domains and IP addresses) and charged on the Azure bill; Microsoft's pricing page showed no rate when we read it. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026	Not in our sources
Free tier or trialDiffers	Matches A 30-day free trial, then Azure billing. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026	Not in our sources
Platform it is part of	Microsoft: Native to Azure, billed on the Azure bill, with a Security Copilot integration in preview. Source: Microsoft Learn: Defender EASM documentation · Read 27 Sep 2026	None
Integrations	Data connections to Log Analytics and Azure Data Explorer, and a Security Copilot integration in preview. Source: Microsoft Learn: data connections · Read 27 Sep 2026	Aggregates data from existing IT and security tools; an integration count or named integrations are not published on the pages we read. Source: Sevco Security platform · Read 15 Oct 2026
Price	Billed through Azure on billable assets (approved host:IP combinations, domains and IP addresses) after a 30-day free trial. Microsoft's pricing page did not show a rate when we read it; check it for the current figure. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026	Not published Not published. Source: Sevco Security home page · Read 15 Oct 2026

Where do they differ?

CAASM aggregation: Defender EASM is not in our sources; Sevco describes it.
External attack surface management: Defender EASM describes it; Sevco is not in our sources.
Exposure management: Defender EASM describes it with a condition; Sevco describes it.
Internet-facing discovery: Defender EASM matches; Sevco is not in our sources.
Merges records from several sources: Defender EASM is not in our sources; Sevco matches.
Cross-source queries and reports: Defender EASM partly matches; Sevco is not in our sources.
Price or pricing basis published: Defender EASM partly matches; Sevco is not in our sources.
Free tier or trial: Defender EASM matches; Sevco is not in our sources.

Can they work together?

Neither vendor's pages we read name the other as an integration. That does not mean they cannot work together; ask both vendors.

Choose Defender EASM if

You are on Azure and want an external inventory without a sales call
You want an outside-in baseline before choosing an inventory platform

Choose Sevco if

You want an asset inventory built from the tools you already run, with no new agents
You want remediation tracked until it is validated on the asset

Which limits should you check?

Defender EASM

External assets only: internal devices, SaaS apps and identities are not covered.
No built-in remediation workflow, and no cross-tenant resource access for groups with several Azure tenants.

Sevco

No price, trial, integration count or named integrations published on the pages we read.
Coverage of SaaS, identities, OT and external assets, query capabilities and data freshness are not described on the pages we read.

Put Defender EASM and Sevco in the asset census with others Run the finder

Questions people ask

Is Defender EASM or Sevco better?

Neither is scored on this site. Defender EASM describes 2 of five approaches and Sevco 2 on the pages we read, and they differ on 8 recorded facts. Which fits depends on where your assets live, whether you can install agents, your CMDB and your tools; the finder checks those.

Do Defender EASM and Sevco work with a CMDB?

Defender EASM: Not in our sources. Sevco: Not in our sources.

Do Defender EASM or Sevco publish prices?

Defender EASM: Billed through Azure on billable assets (approved host:IP combinations, domains and IP addresses) after a 30-day free trial. Microsoft's pricing page did not show a rate when we read it; check it for the current figure. Sevco: Not published.