The Online Certificate Status Protocol forms a important part of the online security ecosystem by communicating the revocation status of SSL/TLS certificates from the issuing CA to internet browsers and, ultimately, website visitors. Up-to-date revocation information is vital because, after a certificate has been issued, it may become inappropriate to continue to trust it (as is the case if the certificate is revoked).
OCSP stapling allows web site operators to improve the speed of these checks by stapling the OCSP response to the SSL handshake. This means there is no extra connection to the certificate authority's OCSP server required to check validity status when a browser makes a secure connection.
Comodo provides the following guides to help web site operators enable OCSP stapling:
Apache Webservers - Click Here for help to enable OCSP Stapling.
NGINX Webservers - Click Here for help to enable OCSP Stapling.
Windows Server 2008+ - Click Here for help to enable OCSP Stapling.