Where to learn about more management side / strategic thinking in software dev?

Hi,

Been a dev for the past 12 years, mainly Microsoft stack.

I’ve landed a role which is less hands on techs but a bit more managing a small team, and involved with other management meetings amongst with seniors/managers in different IT departments.

We are not a software house but a support function to the company.

I feel like I am lacking in the management / strategic thinking. How to improve? Articles /books etc?

Tia