See Hyrum Wright's talks on Large-Scale Changes at Google: https://www.youtube.com/watch?v=ZpvvmvITOrk https://www.youtube.com/watch?v=ZpvvmvITOrk (CppCon2014),

See Hyrum Wright's talks on Large-Scale Changes at Google: https://www.youtube.com/watch?v=ZpvvmvITOrk https://www.youtube.com/watch?v=ZpvvmvITOrk (CppCon2014), https://www.youtube.com/watch?v=TrC6ROeV4GI https://www.youtube.com/watch?v=TrC6ROeV4GI (CppCon 2018), and paper by Googlers on ClangMR (http://www.hyrumwright.org/papers/icsm2013.pdf http://www.hyrumwright.org/papers/icsm2013.pdf). It's great! And if you'd like to learn more about how monorepos work in practice there's a couple of papers: https://cacm.acm.org/magazines/2016/7/204032-why-google-stores-billions-of-lines-of-code-in-a-single-repository/fulltext?mobile=false https://cacm.acm.org/magazines/2016/7/204032-why-google-stor... and https://ai.google/research/pubs/pub47040 https://ai.google/research/pubs/pub47040 (Also worth reading: http://danluu.com/monorepo/ http://danluu.com/monorepo/)