Thundra just announced the architecture view support feature today.
It basically helps you detect the issues in your serverless architecture visually by serverless architectures. Connecting edges start to turn to red while the error rate is increasing. Clicking on them will show you the trend-line analysis and even single invocations happened in this view. Plus, you can track the changes in the architecture with our timeline at the bottom left of the architecture view.
You can read more about it this blog post.
Please let us know about your thoughts and critics when you try it out.