Microsoft is now the largest enterprise security vendor in the market. Six product families. Standalone or E5 bundle. The licensing math is among the most complex in enterprise software. The disciplined buyer side response.
Microsoft has spent five years rebuilding itself as the largest enterprise security vendor in the market. The portfolio now spans six product lines (Defender, Sentinel, Entra, Purview, Intune, Priva) sold both as standalone subscriptions and inside the Microsoft 365 E5 Security and E5 Compliance bundles.
The licensing math is among the most complex in enterprise software because every Defender subcomponent, every Entra tier, every Purview module, every Sentinel ingestion plan can be purchased standalone, inside a Microsoft 365 bundle, or through Azure consumption. Customers who default to "we will just buy E5" overpay. Customers who unbundle without a clear coverage map underpay and create gaps.
This pillar sets out the six product families, the standalone versus E5 bundle math, the Sentinel ingestion economics, and the buyer side moves that recover 20 to 35 percent against the unmanaged Microsoft Security baseline. For surrounding context read the Microsoft services practice, the Microsoft knowledge hub, the Microsoft EA negotiation guide, the Microsoft 365 E5 vs E3 comparison, and the Microsoft security licensing unbundled guide.
The fundamental commercial question on Microsoft Security is whether to buy Microsoft 365 E5 (which bundles E3 productivity plus E5 Security plus E5 Compliance plus Power BI Pro plus Phone) or to buy E3 plus targeted security add ons. Microsoft 365 E5 lists at roughly $57 per user per month, E3 at roughly $36, with the differential being the bundled E5 Security and E5 Compliance suites. The decision turns on three questions: how much of E5 Security and E5 Compliance the customer actually deploys, whether competitive products already cover the gap, and how the surrounding Azure spend interacts with security consumption.
Microsoft Defender is the largest Microsoft Security product line by revenue. Six subcomponents matter at procurement.
| Defender component | Coverage | Standalone list per user per month |
|---|---|---|
| Defender for Endpoint P2 | EDR, threat hunting, automated response | $5.20 |
| Defender for Office 365 P2 | Email security, anti phishing, attack simulation | $5.00 |
| Defender for Identity | On premises identity threat detection (formerly Azure ATP) | $5.50 |
| Defender for Cloud Apps | CASB, shadow IT discovery, SaaS posture | $5.00 |
| Defender for Cloud (Servers P2) | Cloud workload protection across Azure, AWS, GCP | $15 per server per month |
| Defender Vulnerability Management | Vulnerability assessment for endpoints | $2.00 |
The four user oriented Defender components (Endpoint P2, Office 365 P2, Identity, Cloud Apps) total roughly $20.70 per user per month standalone. Inside Microsoft 365 E5 they are included. Customers who consume all four routinely justify the E5 uplift on Defender alone. Customers who already run CrowdStrike Falcon, Palo Alto Cortex XDR, or SentinelOne Singularity for endpoint may be paying twice and should rationalize at renewal.
Defender for Cloud is licensed differently from the user oriented Defender products. It bills per protected resource (server, container node, database instance, storage account, app service) and runs across Azure, AWS, and GCP estates. Foundational Cloud Security Posture Management (CSPM) is free.
Each Defender for Cloud module carries its own consumption based pricing:
The buyer side move is to scope coverage to actual production servers, retire the Defender for Servers entitlement on dev environments, and decide whether the surrounding multi cloud workloads need Defender for Cloud or are better served by AWS Security Hub or Google Security Command Center.
Microsoft Sentinel is the cloud native SIEM and SOAR product. It bills per gigabyte ingested per day, with two pricing modes. Pay As You Go runs $2.46 per GB ingested. Commitment Tiers (100 GB through 5,000 GB per day) deliver 15 to 60 percent off the Pay As You Go rate in exchange for a daily ingestion commit.
The Sentinel commercial math depends almost entirely on log source rationalization. Three patterns drive runaway Sentinel bills:
Disciplined Sentinel deployments cost 30 to 60 percent less than first quote estimates after log source filtering.
Microsoft Entra is the rebranded Azure Active Directory plus surrounding identity products. Six tiers matter. Entra ID Free is included with Microsoft 365 base. Entra ID P1 ($6 per user per month standalone) adds conditional access, advanced security reports, and SSPR. Entra ID P2 ($9) adds Privileged Identity Management and Identity Protection. Entra ID Governance ($10) adds access reviews and entitlement management. Entra Permissions Management ($120 per resource per year) covers cloud infrastructure entitlement management. Entra Verified ID and Entra Internet Access / Private Access are newer products with separate pricing. The buyer side move is to scope each Entra component to actual usage and avoid over provisioning P2 to a population that does not consume PIM or Identity Protection.
Microsoft Purview consolidates eight compliance products under one brand: Information Protection, Data Loss Prevention, Insider Risk Management, eDiscovery, Audit, Compliance Manager, Data Catalog, and Data Map. Most components live inside Microsoft 365 E5 Compliance ($12 per user per month add on to E3). The exceptions are Data Catalog and Data Map, which carry separate Azure consumption pricing for the unified data governance platform. Purview is the most commonly under utilized E5 component; many customers buy it for the eDiscovery and DLP capabilities and never deploy Insider Risk Management or Compliance Manager.
Microsoft Intune sits at two tiers. Plan 1 ($8 per user per month standalone, included in Microsoft 365 E3) covers traditional MDM and MAM. Plan 2 (the Intune Suite, $10 per user per month additive on top of Plan 1) adds Endpoint Privilege Management, Remote Help, Tunnel for Mobile Application Management, Advanced Endpoint Analytics, and Specialty Devices Management. The Intune Suite typically requires deliberate evaluation; most customers do not need all five Plan 2 features. Where VMware Workspace ONE or Jamf Pro already provides MDM coverage, Intune Plan 1 may be redundant.
Redress runs a four phase Microsoft Security engagement. Phase one is the security licensing audit, which maps every Defender, Sentinel, Entra, Purview, and Intune entitlement against actual deployment and identifies bundle versus standalone optimization opportunities. Phase two is the competitive evaluation against CrowdStrike, Palo Alto Networks, Splunk, Okta, and SentinelOne where rationalization is appropriate. Phase three is priced negotiation as part of the Microsoft EA cycle, anchored against documented benchmarks. Phase four is post settlement governance, including quarterly Sentinel ingestion reviews and annual entitlement reconciliation. Read the Vendor Shield program, the Renewal Program, and the benchmarking practice.
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A buyer side framework for the broader Microsoft EA renewal cycle. The Microsoft EA volume tier framework, the Microsoft EA True Up framework, the Microsoft 365 mix framework, the Microsoft Azure MACC framework, the Microsoft Enterprise Customer Investment framework, the Microsoft co terminus framework, and the Microsoft Unified support framework.
Used across more than five hundred enterprise software engagements. Independent. Buyer side. Built for Microsoft customers running the next renewal cycle.
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Open the Paper →Microsoft quoted us E5 across the entire estate as the path of least resistance. Redress walked us through actual Defender, Sentinel, and Purview consumption, retired our parallel CrowdStrike Endpoint subscription, scoped Sentinel to filtered log sources only, and dropped 8,500 users from E5 to E3 plus targeted security add ons. Final settlement: 26 percent off the opening Microsoft Security baseline.
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Microsoft signals on Defender pricing, Sentinel ingestion economics, Entra tier benchmarks, Purview adoption patterns, and EA renewal outcomes from the Redress Microsoft practice.
