ASAP - As Soon As Possible
"As Soon As Possible" is full form which is mostly spoken in form of acronym. It is used to stress a sentence representing a task to be completed as soon as it can be.
In a telephonic conversation, a client is requesting to his supplier to deliver 100 packets as soon as he can be. In Conversation :-
Supplier: GM Sir! How can i help you?
Client: I want 100 Packets delivered to my place, ASAP.
Supplier: Sure Sir. I will make it as soon as possible.