Palo Alto: What Does It Mean To Put A Palo Alto In 'Tap' Mode?

If you are not used to Palo Alto, you might not understand 'tap' mode.  The Palo Alto 'tap' port is directly connected to the 'mirrored' port on the core switch (or any switch). You are 'tapped' into the mirrored port of the switch.  See the below topology.  Its just like putting your laptop on the network with Wireshark so that you can capture data.  Same with the Palo.