Time Travel Debugging and Replay's Protocol are at the forefront of advancing dynamic analysis, offering a solution to the challenge of reproducibility and providing broader applications beyond deterministic replay. Dynamic analysis, unlike static analysis, studies software execution over time and is pivotal for tools that require post-hoc examination of software behavior. Replay captures runtime non-determinism to allow exact replays, supporting control flow analyses and paving the way for future data flow analysis advancements. Visual Regression Testing is one practical application, enabling detection and analysis of perceptual changes in software. Additionally, Replay addresses challenges like intermittent test failures by categorizing failures, enabling root cause analysis, and allowing automated remediation. The potential for dynamic analysis at scale is vast, promising to revolutionize areas such as performance and privacy, with the vision of reducing the need for manual software maintenance, akin to how OpenAI leveraged replay data to train AI for complex tasks.