While the full PDF of Foundations of Scalable Systems by Ian Gorton is a commercial publication, you can access substantial free resources, including code examples, course materials, and detailed summaries through GitHub and the author's personal portals. GitHub Resources & Code Official Book Repository : The author, Ian Gorton, maintains a Foundations of Scalable Systems GitHub repo containing the Java code examples used throughout the book. Course Materials
If you specifically want the exact PDF of a published book by O’Reilly or Manning (titles like Software Architecture: The Hard Parts or Foundations of Scalable Systems ): foundations of scalable systems pdf github free