A lot of the tips in this article are very similar to the ones provided in this fantastic book: The Elements of Style [1]. I highly recommend it, even for a non-native speaker.

[1] https://www.amazon.com/Elements-Style-Fourth-William-Strunk/...

The large tech company I work for puts a lot of emphasis on writing. Here are a few suggestions:

1. If you want people to read what you wrote and give you feedback, conciseness is important. We have a general rule of thumb that it takes people 30 minutes to read 4-6 pages of terse material, and it takes roughly an hour to then discuss it. As a result, pretty much all our docs are 6 pages (in the main body; appendixes might be added but are written in a way so that the doc stands on its own without them).

2. For many forms of (non-fiction) communication, the inverted pyramid is a helpful way to structure your thoughts. People are most likely to read the beginning of something, When we read the whole thing, we're more likely to pay more attention to the beginning. It's important then to get the most important information in the beginning, with supporting details as you go.

3. Know the audience, and focus on why the audience should care. If it's not clear why the audience would care, try rephrasing or restructuring to focus on the part they actually would care about.

4. Do lots of iterations. Get feedback from others. You can also iterate on your writing yourself: I find that when I write something and come back to it later, I'm better at finding issues. In order to do a lot of iterations, that means you need to plan out your time. In my company, we often kick-off the doc writing process with a "working backwards" schedule: we're presenting to such-and-such VP on Day X, so we have to have a rough draft of the whole doc on Day Y, so we have to have drafts of individual pieces by Day Z.

5. Be aware of what kind of thing your writing. I'd say 75% of my writing, my audience is myself: I'm writing in order to work through thoughts. I approach that differently when I'm writing something for review by teammates, which I again approach differently from a doc written for other groups.

6. Maybe a bit controversial in some circles, but: Strunk and White (https://www.amazon.com/Elements-Style-Fourth-William-Strunk/...). It's a short book, and even if you don't do everything in it, the focus on clarity and succinctness is still useful.

I've taken the class within Amazon.

Honestly there isn't anything that you couldn't get by simply reading and applying the advice from "The Elements of Style" by Strunk and White[1] and "On Writing Well" by Zinsser [2].

The primary philosophy is that if you can't write well, then you haven't thought it through. The act of writing is an act of reasoning.

0. Practice in a strong feedback loop. This applies for anything, not just writing.

1. Ruthlessly reduce your sentences. Repeat until you can't eliminate or combine any more words.

2. Avoid adverbs. Use "dashed" or "sprinted" instead of "ran quickly". Learn more words.

3. Avoid weasel words like "should" "could" "might". Take a stance and give concrete reasons.

4. Use concrete data over descriptors. "+5% profit" over "increased profit".

5. Write in active voice. Look up the "by Zombies" trick.

6. Use the simplest word that maintains your meaning. No one needs to use the word "utilize".

[1]: https://www.amazon.com/Elements-Style-Fourth-William-Strunk/...

[2]: https://www.amazon.com/Writing-Well-Classic-Guide-Nonfiction...

I have kept around and distributed multiple copies of The Elements of Style, by Strunk and White, for the past few years (lots of revisions of this out there, 4th might be most recent iirc). It's like a 9$ book and the guidance is priceless.

https://www.amazon.com/Elements-Style-Fourth-William-Strunk/...