The understanding of the Ambassador container

yang.wang11

I'm bitter confused about the following words in Exercise5.3.

In an earlier lab we added a second Ambassador container to handle logging. Now that we have learned about using ConfigMaps and attaching storage we will use configure our basic pod.

I picked the definition of Ambassador container from Design patterns for container-based distributed systems
Ambassador containers proxy communication to and from a main container.
it is the same as what I learned from the LFD259 e-book.

my question is we added a second Ambassador container should be changed to we added a second Sidecar container, right?