[alain_gilbert]

Sorry for asking simple questions.

Can someone tell us what exactly is L7 ?

It seems like I cannot find any information when googling it.

[alain_gilbert]

For those interested, "L7 engine" seems to be the "application layer" https://en.wikipedia.org/wiki/Application_layer in the OSI model https://en.wikipedia.org/wiki/OSI_model

So communication protocol such as gRPC and HTTP.