Software Engineering practices - tarunchhabra/parakalo GitHub Wiki
Product Specifications https://www.zartis.com/how-to-write-a-product-spec-components-best-practices/
https://www.atlassian.com/agile/product-management/product-specification
Documenting software design - https://www.industrialempathy.com/posts/design-docs-at-google/
https://github.com/joelparkerhenderson/architecture-decision-record
Technical specification:
https://stackoverflow.blog/2020/04/06/a-practical-guide-to-writing-technical-specs/
Engineering productivity