HEAD-TO-HEAD · FACTS ONLY
Defender EASM vs Rapid7: exposure management facts side by side
SHORT ANSWER
Defender EASM describes 2 of the five tool types on the pages we read and Rapid7 describes 4; they differ on exposure validation and exposure management platforms. On proof, Defender EASM does not describe exploit testing on the pages we read and Rapid7 describes exploitability checks but not attack-style testing. We do not score either; the right choice depends on your estate, current platform, WAFs and capacity to fix.
By The Exposure Desk · Exposure Management Finder · Published 2026-10-11
Desk research from public vendor pages read in September 2026, updated 2026-10-11. Profiles follow our published method; we did not run the products.
How do their shapes compare?
- Microsoft Defender EASM
- Rapid7 Surface Command
- Outer point: described on the vendor's pages we read
- Inner point: not in our sources (it may exist; we did not find it)
What are the facts, side by side?
| Fact | Microsoft Defender EASM | Rapid7 Surface Command |
|---|---|---|
| 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. | Rapid7's attack surface product, combining external discovery (EASM) with a unified internal and external asset inventory (CAASM), part of the Rapid7 Command platform. |
| Deployment | An Azure resource. Cross-tenant resource access, including Azure Lighthouse, is not supported. Source: Microsoft Learn: Defender EASM overview · Read 27 Sep 2026 | Part of the Rapid7 Command platform with Exposure Command, InsightVM and InsightCloudSec. Source: Rapid7 products · Read 27 Sep 2026 |
| EASM discovery | Described A prebuilt inventory for many organisations plus recursive discovery from seeds you supply. Source: Microsoft Learn: what is discovery · Read 27 Sep 2026 | Described Internal and external attack surface visibility, including unknown internet-facing assets and shadow IT. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| Exposure validationDiffers | Not in our sources | Described Rapid7 announced runtime validation for Exposure Command in March 2026, aimed at cloud vulnerabilities; active validation is not described for Surface Command. Source: Rapid7 press release: runtime validation and DSPM for Exposure Command · Read 27 Sep 2026 |
| Exposure management platformsDiffers | Not in our sources | Described Sits in the Rapid7 Command platform next to Exposure Command, InsightVM and InsightCloudSec. Source: Rapid7 products · Read 27 Sep 2026 |
| CTEM programme support | Described Covers discovery and inventory with dashboards for vulnerabilities, compliance and hygiene; remediation happens downstream through Log Analytics and Azure Data Explorer. Source: Microsoft Learn: data connections · Read 27 Sep 2026 | Described Remediation workflows, SLAs and reporting are listed for higher tiers. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| WAF posture | Not in our sources | Not in our sources |
| Subsidiary and owner attributionDiffers | Partly Every asset carries a state (Approved Inventory, Dependency, Monitor Only, Candidate, Requires Investigation) based on connection strength and confidence; cross-tenant access is not supported. Source: Microsoft Learn: what is discovery · Read 27 Sep 2026 | Not in our sources |
| Internal as well as external assetsDiffers | Not in our sources | Matches Combines external visibility (EASM) with a unified asset inventory (CAASM). Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| Cloud connections namedDiffers | Partly Runs as an Azure resource; connections to other clouds are not described. Source: Microsoft Learn: data connections · Read 27 Sep 2026 | Matches InsightCloudSec sits in the same platform. Source: Rapid7 products · Read 27 Sep 2026 |
| Exploitability checkedDiffers | Not in our sources | Partly Runtime validation for cloud vulnerabilities in Exposure Command, announced March 2026. Source: Rapid7 press release: runtime validation and DSPM for Exposure Command · Read 27 Sep 2026 |
| Attack-style testing | Not in our sources | Not in our sources |
| Works through your WAF or edge | Not in our sources | Not in our sources |
| WAF coverage across several vendors | Not in our sources | Not in our sources |
| Retests after a fix | Not in our sources | Not in our sources |
| Routes findings to owners and tickets | Partly Data connectors to Log Analytics and Azure Data Explorer trigger remediation actions downstream. Source: Microsoft Learn: data connections · Read 27 Sep 2026 | Partly Remediation workflows and SLAs at higher tiers; SOAR-ready integrations. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| Applies a compensating controlDiffers | Not in our sources | Partly SOAR-ready automation; remediation workflows at higher tiers. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| Price or pricing basis published | 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 | Partly Public trial; no price published. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| Trial or self-serve start | Matches A 30-day free trial, then Azure billing. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026 | Matches Public self-serve trial. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
| Platform it extends | 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 | Shares the Command platform with Exposure Command and InsightVM. Source: Rapid7 products · Read 27 Sep 2026 |
| 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 | SOAR-ready integrations, with Exposure Command, InsightVM and InsightCloudSec in the same platform. Source: Rapid7 Surface Command · Read 27 Sep 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 | Trial available. Price not published. Exposure Command comes in Essentials and Ultimate tiers. Source: Rapid7 Surface Command · Read 27 Sep 2026 |
Where do they differ?
- Exposure validation: Defender EASM is not in our sources; Rapid7 describes it.
- Exposure management platforms: Defender EASM is not in our sources; Rapid7 describes it.
- Subsidiary and owner attribution: Defender EASM partly matches; Rapid7 is not in our sources.
- Internal as well as external assets: Defender EASM is not in our sources; Rapid7 matches.
- Cloud connections named: Defender EASM partly matches; Rapid7 matches.
- Exploitability checked: Defender EASM is not in our sources; Rapid7 partly matches.
- Applies a compensating control: Defender EASM is not in our sources; Rapid7 partly matches.
Choose Defender EASM if
- You are on Azure and want to start without a sales call
- You want a discovery baseline before buying validation
Choose Rapid7 if
- You already run InsightVM or another Rapid7 product
- You need internal and external assets in one inventory
Which limits should you check?
Defender EASM
- No exploit validation is described.
- No built-in remediation workflow, and no cross-tenant resource access for groups with several Azure tenants.
Rapid7
- No active exploit validation is described for Surface Command itself.
- Remediation workflows and SLAs sit in higher tiers, and no price is published.
Questions readers ask
Is Defender EASM or Rapid7 better?
Neither is scored on this site. Defender EASM describes 2 of five tool types and Rapid7 4 on the pages we read, and they differ on 7 recorded facts. Which fits depends on your estate, current platform, need for proof, WAFs and capacity to fix; the finder checks those.
Which of the two proves exploitability?
Defender EASM: exploitability checked: Not in our sources; attack-style testing: Not in our sources. Rapid7: exploitability checked: Partly; attack-style testing: Not in our sources.
Do Defender EASM or Rapid7 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. Rapid7: Trial available. Price not published. Exposure Command comes in Essentials and Ultimate tiers.