I found more than a few links in your README to be broken. I don’t have a GitHub account to raise issues though.
* https://web.archive.org/web/20210702035314/https://static.go...
* https://sre.google/static/pdf/practical-guide-to-cloud-migra... loads fine for me
* https://web.archive.org/web/20210702003102/https://sre.googl...
and so on; I think based on the presence of those that the rest will be there, too
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