HSTS
securityHTTP Strict Transport Security — a web security policy mechanism that forces browsers to interact with a site only over HTTPS.
Pronunciation
Correct
H-S-T-S
/eɪtʃɛstiːɛs/
Spelled out as individual letters: H-S-T-S. Stands for HTTP Strict Transport Security.
Source: www.rfc-editor.org(official spec)