Are you running your application on a UNIX system? (You probably are). Do you know your octal file permissions? Your various FS choices? Your reserved ports? Your inode limits? Your uid mapping? Your SSL root trust location? Your free-space limits? Your TCP handshake? Your TLS 1.1, 1.2, 1.3 handshake? Your HTTP verbs? Firewall rules? NAT configurations? Load Balancer health checks? JVM -~XmX values? Swap size? Database connection pools? LibC implementations? GNU vs BSD command arguments? cgroups? jails? eBPF? retpolines?

You're probably a developer, and these are concerns of a lower level. They are different skill sets, and pretending otherwise is marketing bullshit.