Terraform: Up and Running
Yevgeniy Brikman
CompTIA Security+: SY0-601 Certification Guide, Second Edition
Ian Neil
Database Reliability Engineering
Laine Campbell & Charity Majors
PCI DSS
Jim Seaman
Data Structures Succinctly
Robert Horvick
Data Structures Succinctly (1)
Data Structures Succinctly Part 2
Unknown
Data Structures Succinctly (2)