Ask HN: What are the best engineering blogs with real-world depth?

I’m looking for examples of high-quality engineering blog posts—especially from tech company blogs, that go beyond surface-level explanations.

Specifically interested in posts that: 1. Explain technical concepts clearly and concisely 2. Show real implementation details, trade-offs, and failures 3. Are well-structured and readable 4. Tie engineering decisions back to business or product outcomes

Any standout blogs, posts, or platforms you regularly learn from?