[1]

HTTP Strict Transport Security Policy

is the name of the combined overall UA- and server-side facets of the behavior defined in this specification.

[3] RFC 6797 - HTTP Strict Transport Security (HSTS) ( (2014-06-02 05:16:10 +09:00 版)) <http://tools.ietf.org/html/rfc6797#section-5.2>