SAP Security for BTP Applications

Why BTP security matters

BTP is the modern application development platform for SAP customers. New extensions, integration flows, and custom applications increasingly live in BTP rather than in the on premise ABAP stack. The security model in BTP is different from the on premise model. Identity flows through a cloud identity provider. Authorization rests on roles defined at the cloud subscription level. Data exposure depends on what the application is granted to read from the on premise backend or the cloud data lake. The security discipline must be designed for the BTP model rather than carried forward from the ABAP authorization habits.

Reference the sap security audit complete guide analysis, the sap cloud connector analysis, and the sap identity management analysis.

Identity model

The BTP identity model rests on a cloud identity provider that federates with the corporate identity store. The customer position is to federate BTP with the corporate Active Directory or equivalent through single sign on. Local user accounts in the BTP identity service are restricted to break glass scenarios. The federation supports central account provisioning, central account de provisioning, and central multi factor authentication policy. The federation discipline avoids the orphaned BTP account problem that auditors will find when a leaver retains BTP access weeks after corporate de provisioning.

Reference the sap identity management analysis, the sap role design analysis, and the sap gdpr compliance analysis.

Authorization model

BTP authorizations rest on role collections that bundle scopes from individual applications. The customer position is to design role collections that mirror business functions and to assign role collections through a workflow that records the business justification. Direct assignment of individual scopes is restricted. The role collection design is reviewed annually and unused role collections are retired. The discipline mirrors the on premise role design discipline but adapts to the cloud subscription model. The reference is the role design analysis.

Reference the sap gdpr compliance analysis, the sap security s4hana analysis, and the sap license audit complete guide analysis.

The federated identity model is the single most leveraged BTP control. Federation closes the leaver risk and converts the cloud subscription into an extension of the corporate identity perimeter rather than a separate identity island.

Data exposure model

BTP applications expose data through three channels. The cloud connector channel reaches the on premise backend. The destination service channel reaches other cloud APIs. The data lake channel reaches the cloud data warehouse. The customer position is to define the minimum data exposure required for each application and to document the exposure in a data access register. The register is reviewed when the application moves through stages and is reviewed annually thereafter. The discipline bounds the data flow and supports the regulatory data residency answer.

Reference the sap license audit complete guide analysis, the sap compliance framework analysis, and the sox sap itgc analysis.

BTP posture that survives audit

The audit defensible BTP posture rests on five controls. First, federated identity with corporate single sign on and central de provisioning. Second, role collection design with workflow assignment and annual review. Third, data exposure register with minimum required access. Fourth, central SIEM forwarding from BTP audit log. Fifth, quarterly review of BTP subscription configuration including identity provider trust, role collection inventory, and data exposure register. The five controls satisfy SoX ITGC, GDPR data flow review, and the cloud subscription due diligence questionnaire.

Reference the sox sap itgc analysis, the sap grc implementation analysis, and the sap security audit complete guide analysis.