Should one consider CSP at the very early stage of starting a new website or under what conditions should one consider implementing CSP.

• CSP on MDN (developer.mozilla.org/en-US/d...)

• Content-Security-Policy-Report-Only (developer.mozilla.org/en-US/d...)

When to add a CSP (Content Security Policy) (kentcdodds.com/calls/04/41/wh...)