Inbound Interface: If the data is coming in to the any system that is called interface or also we can say that Inbound means external data coming into the System.
For Example:If you are uploading data from excel file to System it is an Example for Inbound interface .
Outbound Interface:If the data is going out from Any System it is called an Outbound interface and also we can say that Outbound means send the system application data to external System.
For Example:All the Report Programs which reads the data from the database are examples of outbound interface.
