Microsoft Defender for Business vs Obsidian Security
Microsoft Defender for Business
microsoft.com
Obsidian Security
obsidiansecurity.comSide by side
| Figure | Microsoft Defender for Business | Obsidian Security |
|---|---|---|
| Price from | $0.25/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · SaaS Security Posture Management Software | 8.5 (#3) | 8.5 (#4) |
| Integrations | The product integrates with Microsoft 365 Lighthouse and can work with remote monitoring and management tools and professional services automation software. | Named integrations include Amazon Bedrock, Microsoft Foundry, Anthropic Claude, n8n, Google Vertex AI, OpenAI, Microsoft Copilot, Salesforce Agentforce, Google Workspace, GitHub, Microsoft 365, ServiceNow, Salesforce, Snowflake, Databricks, and Workday. |
| Purpose | Microsoft Defender for Business is an endpoint security solution for small and medium-sized businesses with up to 300 users that helps protect devices from ransomware, malware, phishing, and other threats. | Obsidian provides visibility, governance, and runtime controls for AI agents, identities, and integrations across third-party applications. |
Plans
Microsoft Defender for Business
- Microsoft Defender for Business$3 a month
- Microsoft Entra Internet Access$5 a month
- Microsoft Entra Suite$12 a month
- Microsoft Defender for Business$3 a year
Obsidian Security
- FreeFree
- AdvancedPriced on request
- FoundationsPriced on request
In their own words
Microsoft Defender for Business
Microsoft Defender for Business has no write-up on Specifiction yet; its figures are above.
Obsidian Security
Obsidian Security provides visibility, governance, and runtime controls for AI agents, identities, and integrations across third-party applications. Its AI security capabilities include agent visibility and governance, runtime security, and AI security posture management. The Free plan covers up to 1K users and includes discovery of app sprawl, unsanctioned AI, and shadow SaaS, plus spear-phishing detection without manual tuning. Foundations covers discovery and governance; Advanced adds detection, proactive defense, and incident response. No plan prices are stated, and both Foundations and Advanced require a quote. Advanced lists detection for account takeover, session hijacking, insider risk, misuse, sensitive data exposure, and API or token compromise. The AI Assistant is designed to explain rules, triage threats, manage exceptions, and provide security steps. The web platform has hundreds of validated connectors, with examples including Amazon Bedrock, Anthropic Claude, Google Workspace, GitHub, Microsoft 365, Salesforce, ServiceNow, and Snowflake. Organizations can build custom connectors hosted on the platform. Obsidian serves Fortune 1000 and Global 2000 organizations. A free trial requires no credit card, but no duration is stated.