What is SSL Offloading?

Certain TLS functions ( the handshake and the encryption/decryption) can be compute expensive. Offloading these functions frees up processing power from your hosted website / webapp. That’s SSL offloading  (aka load balancing).

Which GCP Services offer SSL Offloading?

Cloud Load Balancers - SSL Proxy (for External TCP Load Balancing). Notable, the external HTTPs Load Balancer (which is based on Google Front End) does NOT offer SSL Offloading.