Required knowledge for Security Infrastructure Architecture role

Hi, I'm about to start a new role in Security Architecture, specifically on the Infrastructure Architecture, and I wanted to get some advice on what should I learn in order to perform. I mean which are the basics of it, and if there's any kind of resource, such as books, videos or courses, that you would recommend me. I've got 5 years of experience in IAM, but that's a pretty different domain than what I'm about to do.

architecture cybersecurity infrastructure security security infrastructure