NAT differences

Hey Guys,

I'm configuring NAT on my Cisco FMC. What's the difference between them? can you guys give me some examples?

NAT Rules Before

Auto Nat

NAT Rules After

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NAT Rules Before:

IPSEC tunnel and SSL NAT

Auto Nat

Access to the internet via interface

NAT Rules After:

NAT from outside to our internal servers ( servers that are accessible from outside)

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is it correct ?