JWT - JSON Web Tokens
https://developer.okta.com/blog/2017/08/17/why-jwts-suck-as-session-tokens
what are JWTs useful for?
- they're for speeding up API token authentications.
- because the tokens are signed, when you authenticate the first time, the token is 'safe'
- subsequent api calls (even across different APIs in a service, think google cloud APIs) don't need reauthentication, because they are trusted to be 'safe'.
- but this also means you need to store your JWT properly