I hear all the time that higher-ups think that the key to retaining women is hosting diversity events, adding parental leave / mother's rooms, or other stuff specifically catered to women. Not saying those aren't good things to have, but for the most part, if you listen to your employees and treat all of your engineers well, you will see gains to retaining everyone, including women.

Women being so "in demand" for tech companies looking to improve diversity numbers also gives some of us the opportunity to be pickier with what kind of work environments we'll accept.