# CASB - Cloud Access Security Broker vs Reach Security - MS E3/E5 Optimization: side-by-side comparison (2026) [CASB - Cloud Access Security Broker](https://cybersectools.com/tools/casb-cloud-access-security-broker) is a commercial [cloud access security broker](https://cybersectools.com/categories/casb) solution by [Olfeo](https://cybersectools.com/companies/olfeo). [Reach Security - MS E3/E5 Optimization](https://cybersectools.com/tools/reach-security-ms-e3e5-optimization) is a commercial [SSPM](https://cybersectools.com/categories/sspm) solution by [Reach Security](https://cybersectools.com/companies/reach-security). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | CASB - Cloud Access Security Broker | Reach Security - MS E3/E5 Optimization | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Cloud Access Security Broker | SSPM | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Olfeo | Reach Security | | Headquarters | – | – | ### Use cases and capabilities | | CASB - Cloud Access Security Broker | Reach Security - MS E3/E5 Optimization | |---|---|---| | Visibility | Yes | Yes | | Microsoft | – | Yes | | Microsoft 365 | – | Yes | | Security Configuration | – | Yes | | Misconfiguration | – | Yes | ### Core features **CASB - Cloud Access Security Broker** 10 features listed. Sign in on the page to see them. **Reach Security - MS E3/E5 Optimization** 6 features listed. Sign in on the page to see them. ### Integrations **CASB - Cloud Access Security Broker** No integrations listed. **Reach Security - MS E3/E5 Optimization** 2 integrations listed. Sign in on the page to see them. ## CASB - Cloud Access Security Broker vs Reach Security - MS E3/E5 Optimization FAQ Common questions when comparing CASB - Cloud Access Security Broker vs Reach Security - MS E3/E5 Optimization for cloud access security broker. ### What is the difference between CASB - Cloud Access Security Broker and Reach Security - MS E3/E5 Optimization? **CASB - Cloud Access Security Broker**: CASB solution for securing SaaS application access and usage, built by Olfeo. **Reach Security - MS E3/E5 Optimization**: Optimizes Microsoft E3/E5 security configs using real-world attack data, built by Reach Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes CASB - Cloud Access Security Broker and Reach Security - MS E3/E5 Optimization? **CASB - Cloud Access Security Broker** is made by Olfeo. **Reach Security - MS E3/E5 Optimization** is made by Reach Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is CASB - Cloud Access Security Broker a good alternative to Reach Security - MS E3/E5 Optimization? In part. CASB - Cloud Access Security Broker and Reach Security - MS E3/E5 Optimization are not in the same category on CybersecTools. Both cover Visibility. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [CASB - Cloud Access Security Broker vs ManagedMethods Cloud Monitor](https://cybersectools.com/compare/casb-cloud-access-security-broker-vs-managedmethods-cloud-monitor) - [CASB - Cloud Access Security Broker vs Skyhigh Security Skyhigh Cloud Access Security Broker](https://cybersectools.com/compare/casb-cloud-access-security-broker-vs-skyhigh-security-skyhigh-cloud-access-security-broker) - [CASB - Cloud Access Security Broker vs viLogics Cloud Access Security Broker](https://cybersectools.com/compare/casb-cloud-access-security-broker-vs-cloud-access-security-broker) - [Reach Security - MS E3/E5 Optimization vs ManagedMethods Cloud Monitor](https://cybersectools.com/compare/managedmethods-cloud-monitor-vs-reach-security-ms-e3e5-optimization) - [Reach Security - MS E3/E5 Optimization vs Skyhigh Security Skyhigh Cloud Access Security Broker](https://cybersectools.com/compare/reach-security-ms-e3e5-optimization-vs-skyhigh-security-skyhigh-cloud-access-security-broker) - [Reach Security - MS E3/E5 Optimization vs viLogics Cloud Access Security Broker](https://cybersectools.com/compare/cloud-access-security-broker-vs-reach-security-ms-e3e5-optimization) ## Alternatives to each - [See all CASB - Cloud Access Security Broker alternatives](https://cybersectools.com/alternatives/casb-cloud-access-security-broker) - [See all Reach Security - MS E3/E5 Optimization alternatives](https://cybersectools.com/alternatives/reach-security-ms-e3e5-optimization) --- Source: https://cybersectools.com/compare/casb-cloud-access-security-broker-vs-reach-security-ms-e3e5-optimization For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/casb-cloud-access-security-broker.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on CASB - Cloud Access Security Broker and Reach Security - MS E3/E5 Optimization: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md