Security
OCSP
Abbreviation for Online Certificate Status Protocol
In short and in plain language
OCSP is a way for a browser to check the security certificate of a website.
The browser asks if the certificate is still valid.
With stapling, the server sends this answer along by itself.
Then the browser does not need to send an extra request. This can make the connection start faster.
Definition
OCSP is a method a browser can use to check whether a website's security certificate is still valid. With so-called stapling, the server delivers this information itself. This saves the browser an extra request and can speed up the connection setup.