Understanding SBOM: Definition, Standards & Automation
Managing software supply chains and ensuring application security is increasingly complex. One essential tool to streamline this process is the SBOM (Software Bill of Materials). In this guide, we’ll cover what an SBOM is, why it’s important, the main standards, and how it can be automated in your CI pipelines.
What Is a Bill of Materials (BOM)?
A Bill of Materials (BOM) is a structured list of all components used to build a product. While it originated in manufacturing, particularly in the automotive sector, the concept now applies to software as well.
For instance, car manufacturers often source engines, airbags, and electronics from suppliers worldwide. The BOM details every part and its origin. If a specific batch of airbags is recalled, manufacturers can quickly identify affected vehicles using the BOM.
Similarly, software is built using multiple libraries, modules, and third-party components. Tracking them systematically is where the Software Bill of Materials becomes critical.
What Is a Software Bill of Materials?
A Software Bill of Materials, commonly abbreviated as SBOM, is a comprehensive list of all components, libraries, and modules required to build an application. It also maps how each component relates to others in the supply chain.
The SBOM concept gained traction in 2018 through the NTIA (National Telecommunications and Information Administration) multistakeholder process. This structured inventory covers open-source, commercial, and proprietary components, helping teams maintain transparency, compliance, and security.
By keeping a Software BOM, organizations can track software dependencies, prevent vulnerabilities, and ensure regulatory compliance efficiently.
Why Software BOMs Are Vital for Security
Just like a physical BOM in manufacturing, a Software BOM plays a key role in software security. If a vulnerability is discovered in a widely used library, scanning the SBOM is far faster than reviewing all software manually. Tools like Trivy automate this process.
Using a Software Bill of Materials, teams can:
- Prioritize remediation based on component risk
- Implement vendor- or version-specific policies
- Track dependencies across open-source and commercial libraries
Developers benefit too. A well-maintained SBOM ensures approved libraries are used, vulnerabilities are addressed early, and compliance is easier to demonstrate. In the future, seamless sharing of Software BOMs between organizations will become standard practice for critical infrastructure.
SBOM Format Standards
SBOMs are structured records that detail components and their supply chain relationships. Standardized formats enable automated processing and data exchange. The two most widely adopted formats are SPDX and CycloneDX.
SPDX
SPDX (Software Package Data Exchange) is a Linux Foundation project. It standardizes software package metadata for secure and consistent sharing. Major contributors include Intel, Microsoft, Siemens, and Sony. The current specification, version 2.2.2, defines mandatory fields for a valid SBOM record.
CycloneDX
CycloneDX is a lightweight SBOM format designed for security and supply chain analysis. Developed from the OWASP community, it supports SaaS BOMs and various ecosystems. Its simplicity and focus on application security make it ideal for DevOps teams managing complex environments.
Automating Software BOM Generation With CI
Automation is essential for generating accurate SBOMs. Tools like Syft create Software BOMs from container images or file systems and support both SPDX and CycloneDX formats.
Here’s a basic example using GitHub Actions:
name: SBOM
on:
release:
types: [published]
jobs:
sbom:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v3
with:
ref: ${{ github.ref_name }}
- name: Anchore SBOM Action
uses: anchore/sbom-action@v0.12.0
with:
format: cyclonedx-json
This workflow:
- Runs on release publication
- Checks out the repository
- Generates a CycloneDX Software BOM using Syft
- Uploads the BOM as a release artifact
The output JSON includes component metadata, Package URLs (PURLs), and identifiers for vulnerability assessments. Automating this process reduces errors and ensures consistent tracking of software components.
How ZippyOPS Supports SBOM Implementation
Implementing Software BOMs across complex environments requires expertise. ZippyOPS offers consulting, implementation, and managed services in DevOps, DevSecOps, DataOps, Cloud, Automated Ops, AIOps, MLOps, Microservices, Infrastructure, and Security.
ZippyOPS can help your organization:
- Automate SBOM generation and integration with CI/CD pipelines
- Enhance application security and compliance
- Optimize software supply chain management
Explore our services, solutions, and products. For video tutorials, visit our YouTube channel.
Conclusion
A Software Bill of Materials is essential for modern software development and security. By adopting Software BOM standards and automating generation in CI/CD pipelines, organizations reduce risk, improve transparency, and ensure compliance.
Take action today: implement Software BOM practices with guidance from ZippyOPS. Contact us at sales@zippyops.com to strengthen your software supply chain security.
