Newsletters I subscribe to

Leadership

Level Up by Patrick Kua – Ideal for busy people such as Tech Leads, Engineering Managers, VPs of Engineering, CTOs, and more.
Leadership in Tech by Jakub Chodounsky - A weekly newsletter for CTOs, engineering managers, and senior engineers to become better leaders.
Wes Kao's Newsletter - honest insights and practical advice as an operator in a fast-moving startup
Lessons in Engineering Leadership by Kelly Vaughn - Real view of engineering leadership.
The Pragmatic Engineer By Gergely Orosz - Big Tech and startups, from the inside. Highly relevant for software engineers and managers, useful for those working in tech.
The Beautiful Mess By John Cutler - cross-functional product development
Stay SaaSy - Writing about scaling enterprise SaaS product and engineering teams from $0 to IPO and beyond.
LeadDev – Regular updates on all things LeadDev

Last Week in AWS Newsletter by Corey Quinn – No nonsense newsletter about what’s new in the AWS world.
tl;dr sec by Clint Gibler – The best way to keep up with the latest and greatest in information security.
The Cloud Security Reading List by Marco Lancini.– A low-volume newsletter that highlights security-related news focused on the cloud-native landscape

Of Dollars And Data by Nick Maggiulli - focuses on personal finance using data analysis.
Finshots - a daily dose of the latest, most important Financial developments focused on India.
The Hustle – Business and tech in 5 minutes or less