Open Source: Benefits, Risks, and Governance
Open source software is now foundational to modern technology. The vast majority of production systems run on open source foundations — Linux, PostgreSQL, Redis, Kubernetes, and thousands of libraries. Using open source effectively requires understanding its benefits, managing its risks, and maintaining appropriate governance.
Benefits of Open Source
- Cost: no licence fees for the software itself (though support and cloud hosting costs still apply)
- Transparency: source code is visible — you can understand exactly what the software does, audit for security issues, and customise it
- Community: active open source communities provide support, bug fixes, security patches, and feature development at scale
- Talent: developers prefer working with mainstream open source tools — using OSS helps with talent attraction and retention
Risks of Open Source
- Security vulnerabilities: Open source dependencies are a significant attack surface — Log4Shell and similar vulnerabilities demonstrate the risk. Software Composition Analysis (SCA) tools manage this.
- Licence compliance: Different OSS licences have different requirements. GPL licences require derivative works to be open sourced. Copyleft clauses can create legal exposure if ignored.
- Project abandonment: Open source projects can be abandoned — leaving you dependent on unmaintained software
OSS Governance
Establish an open source policy: approved licence types, SCA tooling in CI, a process for evaluating new OSS dependencies, and contribution guidelines if engineers contribute back to OSS projects. Treat open source dependencies as third-party suppliers — with appropriate evaluation and ongoing monitoring.