Use Python 3 instead of Python 2 • Any Python web framework • Install arbitrary 3rd party dependencies (incl. native) • Access the file system • Spawn background threads • Use Google Cloud client libraries </>
Use Java 11 instead of Java 8 • Any web framework (incl. non-Servlet based) • No more class whitelist (Java2D, threads, sockets…) • XML configuration → YAML configuration • Customize entrypoint ◦ JVM fine-tuning, executable JARs </>