Marlon Grigsby

Marlon Grigsby is a former CIO and CISO turned serial entrepreneur, trusted advisor, and coach to high-performing executives. As the founder of Sentry IT, an Atlanta-based CIO Advisory and cybersecurity firm, he helps organizations navigate digital transformation, modernize infrastructure, and defend against today’s growing cyber threats. With over two decades of leadership experience in IT, Marlon is a go-to strategist for Fortune 500 tech leaders, public sector agencies, and fast-scaling companies. Beyond IT, Marlon is a certified life coach and the creator of multiple SaaS platforms including Forum OS, which powers entrepreneurial peer groups, and Personal OS, a productivity and planning system for high achievers. He’s the host of The IT Minute: 60-Second Tech Talks, a dynamic speak...