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Last updated: April 29, 2026
CASB modes (forward proxy, reverse proxy, API), SaaS-to-SaaS OAuth governance, shadow-IT discovery, sensitive-data inventory across 200+ SaaS apps, and the rollout pattern that doesn’t break business.
A Bengaluru SaaS company audited their SaaS portfolio in 2024. They expected to find ~30 services in use; they found 247. Marketing had Canva, AdRoll, Mailchimp; HR had BambooHR, Greenhouse, three different background-check services; engineering had GitHub, Snyk, three monitoring tools, two CI providers. Most weren’t in IT’s inventory. None had been security-reviewed. Six were processing customer PII without DPAs in place. This module covers SaaS governance and the role of CASB.
What CASB is
Cloud Access Security Broker — security layer between users and SaaS applications. Functions:
- Visibility — discover SaaS in use; even shadow IT
- Access control — single sign-on enforcement, conditional access
- Data protection — DLP for data going to / from SaaS
- Threat protection — detect anomalous SaaS activity
- Compliance — audit trail for regulated workloads
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