What is a node?

I’m unclear on what a node is. E.g. In the sentence
“Placing a cache directly on a request layer node enables the local storage of response data.”

What is a node?

Hi Jeong,

We are looking into this query and will get back to you soon.

Thank you for reaching out to us. Please let us know if you have any further queries.

‘Node’ means a server or a machine.