Content licence
Last updated: November 6, 2026
What the licence covers
Unless a page says otherwise, the written content and diagrams on this website (patterns, reference architectures, templates, worked examples, articles and their downloadable versions) are © David Tirabassi and licensed to you under the Creative Commons Attribution 4.0 International licence (CC BY 4.0).
This licence is irrevocable for material you have received under it; the copyright owner, David Tirabassi, may license future versions differently.
What you may do
- Share: copy and redistribute the content in any medium or format.
- Adapt: change it, combine it with your own work and build on it.
- For any purpose, including commercially and within your organisation.
What you must do
- Give appropriate credit, link to the licence and say whether you made changes.
- Not suggest that we endorse you or your use of the content.
- Not add legal terms or technical measures that stop others doing what the licence allows.
Replace the URL with the page you are citing. For example:
Source: David Tirabassi, IT Architecture Patterns (https://www.itarchitecturepatterns.net/patterns/int-api-cloud), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
Every pattern, reference architecture, template, article and worked example page has a "Copy attribution" button that copies this sentence with that page's address.
What the licence does not cover
- The names "IT Architecture Patterns" and itarchitecturepatterns.net, logos and site design.
- The website's software and interactive tools (such as the decision wizard, ICR Builder and Strategy Modeler), except where a tool's own repository grants a licence.
- Third-party material, including product names and trademarks.
The tools themselves are not licensed under CC BY. The content we publish that they display, and the recommendations they produce, are licensed as set out above.
Copyright protects this expression, not the underlying ideas or methods; where a pattern derives from published work, the source is credited on the page.
The full licence and the Terms
This page is a summary. The licence itself is the CC BY 4.0 legal code (Creative Commons also publishes a short summary); where this page and the legal code differ, the legal code applies. The Terms of Service also apply to your use of the website.