Platforms
SHP does not treat hardening as universally portable between systems.
Every platform domain must have explicitly defined boundaries before SHP controls or certification claims can be applied to it.
Platform support requires appropriate specification, threat-model, control, verification, and certification definitions.
No platform is implicitly supported and no cross-platform certification equivalence is implied.
Fedora Linux
Fedora is the currently published SHP platform with public website material covering its hardening and certification model.
The Fedora section includes the current public platform scope and the formal Tier 1 threat model.
Other SHP platform domains
The SHP specification corpus may define or reference additional platform domains.
Their existence in the specification corpus does not, by itself, mean that a public certification service, complete implementation, or current certification track is available.
Public availability and certification scope must be stated explicitly.
Platform independence
Each platform remains structurally independent.
A tier or certification result on one platform does not imply equivalent controls, threat coverage, assurance, or certification meaning on another platform.
The applicable platform specifications define those boundaries.