What is Service Interafce & when to use the same?

[MrVmware9423]

Dear Team,

Just wanted to understand what is the use of Service Interface? Could some one please try to explain me in simple english.

Thank you in Advance

[Sreec]

DHCP, NAT, Firewall, Native LB, and static route design/deployments are all supported by the service interface.

[MrVmware9423]

Thank you Sreec 

In what all use cases we have to use service interface? Please assist.