1. What Is the CASB Market?
The Cloud Access Security Broker Market covers platforms that sit between cloud application users and cloud service providers. They enforce security policies and provide visibility into unsanctioned application usage. They also protect data in cloud storage and collaboration platforms and detect anomalous behaviour indicating account compromise or insider data theft. CASB platforms discover the full inventory of cloud applications in use by analysing firewall, proxy, or DNS logs. This reveals the shadow IT cloud services that employees use without IT knowledge and outside sanctioned monitoring. Data security capabilities include content inspection for sensitive data in cloud storage, collaboration platforms, and email. This provides the DLP enforcement that regulations require for personal health information, payment card data, and intellectual property. Healthcare organisations, financial institutions, legal firms, and technology companies with significant intellectual property deploy CASB. It maintains visibility and control over the cloud application landscape that remote work has expanded beyond perimeter security.
2. CASB Market Size & Forecast
3. Emerging Technologies
- API-based CASB integration with Microsoft 365, Google Workspace, Salesforce, and other applications uses cloud provider APIs. It inspects data at rest, monitors user activity, and enforces access policies. This avoids redirecting traffic through inline proxy infrastructure that degrades performance and creates connectivity dependencies.
- Shadow IT discovery uses DNS and firewall log analysis. It identifies the thousands of unsanctioned cloud services employees access for work. This quantifies the data exposure risk from sensitive business data stored in consumer-grade cloud applications outside corporate monitoring and DLP.
- Generative AI application governance uses CASB visibility into ChatGPT, Microsoft Copilot, and Google Gemini usage. It identifies the sensitive data employees input as prompts. This enables enforcement of AI use policies that prevent intellectual property and confidential information from reaching external AI training pipelines.
- Adaptive access control uses CASB integration with identity providers and device management platforms. It adjusts cloud application permissions based on real-time user identity confidence, device health, network location, and anomalous behaviour. This implements continuous verification for cloud application access.
Comparable technologies are influencing adjacent market segments in similar ways. Read more in our Secure Web Gateway Market.
4. Key Market Opportunity
A key opportunity in the CASB market involves enforcing data loss prevention in cloud applications for regulated industries, where financial services and healthcare organisations must demonstrate that sensitive data does not leave approved environments. Vendors with cloud DLP that integrates with on-premise policies can serve this compliance requirement. A parallel growth driver is driven by shadow IT discovery, which retains standalone value as organisations grow their cloud application estates without always obtaining IT approval. As CASB integrates into SASE and SSE platforms, the addressable opportunity is shifting from standalone deployment toward CASB as a valued component within platform consolidation decisions.
5. Top Companies in the CASB Market
The following organisations hold leading positions in the CASB Market. The full report provides revenue share, SWOT analysis, and competitive benchmarking for each player.
- Microsoft
- Netskope
- Zscaler
- Palo Alto Networks
- Skyhigh Security
- Cisco
- Forcepoint
- Broadcom
- IBM
- Bitglass (Forcepoint)
- Lookout
- Trend Micro
6. Market Segmentation
The CASB Market is analysed across 4 segmentation dimensions. Revenue data, growth rates, and competitive intensity by sub-segment are available in the full report.
| Segmentation | Sub-Segments |
|---|---|
| By Solution | Shadow IT DiscoveryData SecurityThreat ProtectionCompliance |
| By Deployment | API-BasedProxy-Based |
| By End User | BFSIHealthcareGovernmentIT and TelecomRetail |
| By Geography | North AmericaEuropeAsia PacificLatin AmericaMiddle East and Africa |
7. Key Market Trends (2026–2034)
Three major forces are shaping the CASB Market trajectory over the forecast period:
CASB Has Evolved Into the Cloud Data Security Platform Governing Sensitive Data in Microsoft 365, Salesforce, and Generative AI Applications.Netskope's Security Service Edge, Zscaler Private Access plus CASB, and Palo Alto Networks Prisma Access combine cloud application visibility, data loss prevention, and inline SSL inspection into unified cloud security platforms delivering CASB functionality as a component of the broader SASE architecture rather than a standalone product category. The CASB market's absorption into SSE is reflected in Gartner's Magic Quadrant evolution from a separate CASB category to integration into SSE and SASE evaluation frameworks, and the top-ranked CASB vendors McAfee MVISION Cloud, Bitglass, and Symantec Cloud SOC have all been acquired by larger security platform vendors. Salesforce, Microsoft, and ServiceNow native Data Protection APIs enable CASB platforms to apply consistent data security policies across cloud application APIs, removing the network traffic inspection requirement that made CASB deployment complex in environments with split tunnelling or direct cloud connectivity.
Shadow IT Discovery Has Revealed Thousands of Unsanctioned Cloud Applications Handling Sensitive Business Data Outside Security Monitoring.Netskope's research from telemetry across 2,000-plus enterprise customers consistently identifies 1,500-2,000 distinct cloud applications in use, with the majority being free or freemium SaaS tools employees adopt without IT approval to address productivity needs that sanctioned applications do not meet. The shadow IT discovery use case provides immediate security value justification for CASB deployment by revealing applications where sensitive data may be stored or processed outside corporate data governance controls, feeding into data classification and DLP policy development. Risk scoring of discovered applications using vendor security assessment questionnaires from CloudCheckr and Skyhigh's Cloud Registry provides automated SaaS risk classification enabling security teams to generate acceptable-use policies for the broad application landscape that manual evaluation cannot assess at scale.
Generative AI Governance Has Become the Fastest-Growing CASB Use Case as Employees Submit Confidential Data to External AI Systems.API-mode CASB deployment through Microsoft Purview compliance portal, Google Workspace DLP, and Salesforce Shield Platform allows security teams to apply data classification labels, access control restrictions, and exfiltration prevention policies directly within cloud application storage rather than requiring all traffic to route through an inline CASB proxy creating latency and bypass risk. The API-mode CASB approach trades real-time blocking capability for comprehensive policy coverage across cloud application content regardless of network path, and the hybrid deployment of both API-mode for content policy and inline proxy mode for real-time access control provides complete CASB functionality that either approach alone cannot deliver. Box, Dropbox, and Google Drive API integration enables CASB platforms to scan stored content for sensitive data discovery, apply classification labels, and restrict external sharing of labelled content retroactively against data already resident in cloud storage.
For related market intelligence, see the Sase Market.
8. Segmental Analysis
By solution, the API-based CASB segment dominated the CASB Market in 2025, as Microsoft Defender for Cloud Apps and Netskope anchored visibility into sanctioned and unsanctioned SaaS data flows across enterprise cloud environments, generating the largest share of CASB revenue.
By deployment, the inline real-time inspection segment is projected to register the highest growth rate through 2034, as CASB capabilities merge into unified SASE and SSE platforms from Zscaler and Palo Alto Networks that extend data-loss-prevention controls to all cloud traffic without separate proxy infrastructure.
9. Regional Analysis
Regional demand patterns across the CASB Market reflect differences in regulation, technological maturity, and capital investment.
Largest Market Share
North America dominated the CASB Market in 2025, accounting for approximately 44% of global revenue, due to vendors including Netskope and Palo Alto Networks and broad enterprise cloud adoption that creates shadow IT and data-control challenges. Moreover, strict data-protection requirements in finance and healthcare sustain cloud DLP demand. In addition, early SASE adoption integrates CASB into platform consolidation. Regional leadership is attributed to this combination of vendor presence and compliance-driven demand.
Highest CAGR Region
Asia Pacific is projected to register the highest CAGR in the CASB Market through 2034, driven by rapid cloud adoption and growing enterprise sensitivity to unsanctioned application use across China, India, and Southeast Asia. The region is also witnessing expanding data-protection regulation that requires cloud DLP enforcement. Moreover, SASE adoption is carrying CASB functionality into a broader set of organisations as a platform component. The combination of these demand drivers and an expanding base positions Asia Pacific for sustained growth outperformance through 2034.
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Frequently Asked Questions
The CASB Market was valued at USD 12.40 Bn in 2025 and is projected to reach USD 56.72 Bn by 2034, growing at a CAGR of 18.4% over the 2026–2034 forecast period.
The CASB Market is projected to grow at a CAGR of 18.4% from 2026 to 2034.
North America dominated the CASB Market in 2025, accounting for approximately 44% of global revenue, due to vendors including Netskope and Palo Alto Networks and broad enterprise cloud adoption that creates shadow IT and data-control challenges.
The leading companies in the CASB Market include Microsoft, Netskope, Zscaler, Palo Alto Networks, Skyhigh Security, Cisco, Forcepoint, Broadcom, IBM, Bitglass (Forcepoint), Lookout, Trend Micro.
Casb has evolved into the cloud data security platform governing sensitive data in microsoft 365, salesforce, and generative ai applications.
By solution, the API-based CASB segment dominated the CASB Market in 2025, as Microsoft Defender for Cloud Apps and Netskope anchored visibility into sanctioned and unsanctioned SaaS data flows across enterprise cloud environments, generating the largest share of CASB revenue.
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