Security Functions Often Missing from Public Cloud and SaaS Offerings

What Functions Are Typically Missing?

Public cloud and SaaS providers deliver a wide range of security services, but they generally do not provide the following functions: 1) end‑to‑end encryption of data at rest and in transit, 2) full‑scale key management for on‑prem or hybrid workloads, 3) custom, policy‑based data loss prevention (DLP) for sensitive corporate information, 4) comprehensive audit and compliance reporting tailored to industry‑specific regulations, 5) granular identity governance for cross‑domain user access, and 6) incident‑response orchestration that spans on‑prem, cloud, and SaaS environments.

Why These Gaps Exist

Cloud vendors focus on shared‑responsibility models that leave the customer in charge of application‑level security. SaaS vendors target the application layer and assume the customer will use the underlying platform's controls. Custom DLP, audit, and identity governance often require integration with an organization's existing on‑prem systems, which is outside the scope of most cloud or SaaS contracts.

Impact on Security Posture

Without end‑to‑end encryption, data can be exposed during storage or transfer. Missing key management forces customers to adopt third‑party solutions, creating integration complexity. Lack of custom DLP can lead to accidental leaks of regulated data. Inadequate audit reporting hinders regulatory compliance, while weak identity governance increases insider‑threat risk. Finally, fragmented incident‑response tools slow recovery from breaches that involve multiple platforms.

Bridging the Gap

• Implement a dedicated key‑management service (e.g., AWS KMS, Azure Key Vault, or a hardware security module).
• Deploy a corporate DLP platform that can monitor both cloud and on‑prem traffic.
• Use a security information and event management (SIEM) system that ingests logs from all environments.
• Adopt an identity governance solution that spans SaaS, cloud, and on‑prem directories.
• Establish a cross‑platform incident‑response playbook and automation.

Conclusion

While public cloud and SaaS vendors provide foundational security controls, they typically do not supply end‑to‑end encryption, custom key management, tailored DLP, detailed audit compliance, comprehensive identity governance, or unified incident response. Organizations must layer these functions on top of cloud and SaaS services to achieve a robust, compliant security posture.