Technology Portfolio Management (TPM) Best Practices

Overview

Open source software is simultaneously one of the most strategically valuable and one of the most governance-intensive categories in the Technologies Inventory family. The governance obligations that open source components create are both specific and consequential. License obligations vary dramatically by license type. Security vulnerabilities in widely-used open source components create portfolio-wide exposure that must be tracked and remediated. Supply chain risks from compromised packages or repositories are a growing and well-documented threat vector. And the EU Cyber Resilience Act creates mandatory SBOM requirements for organizations selling products with digital elements in the EU market, making open source component governance a regulatory compliance obligation.

Best Practice

Govern the Open Source Components Inventory as a cross-cutting inventory that captures all open source software components used across the organization, including direct dependencies and transitive dependencies discovered through Software Bill of Materials analysis. Every open source component record should capture: the semantic identifier; the component name, version, and source repository; the SPDX license identifier (Source: The Linux Foundation, SPDX License List, spdx.org/licenses); the license obligation classification; the current security vulnerability status from the NIST National Vulnerability Database (Source: NIST NVD, nvd.nist.gov); the applications that depend on the component; the last governance review date; and the SBOM format in which the component is recorded.

Maintain Software Bills of Materials for all applications and technology products that contain open source components, in SPDX and CycloneDX formats to support the broadest range of regulatory and customer requirements. (Sources: The Linux Foundation, SPDX Project; OWASP Foundation, CycloneDX Project; EU Cyber Resilience Act.) Establish a vulnerability response process that defines the severity threshold above which a vulnerability triggers immediate remediation action, the maximum acceptable time between vulnerability disclosure and remediation completion by severity level, and the escalation process when remediation is blocked.

Benefit(s)

A well-governed Open Source Components Inventory produces compliance, security, and operational benefits that organizations without such governance consistently fail to achieve. License compliance is verifiable because every component’s license obligations are documented. Security vulnerability response is faster and more complete because the path from a disclosed vulnerability to every affected application is already mapped. SBOM requirements from customers, regulators, and supply chain partners are satisfiable because the SBOM data is maintained continuously. And supply chain risk is managed because the provenance and integrity of every open source dependency is governed rather than assumed.