[rahimnathwani]

This is a nice summary, and mostly correct enough. One part I'd like to correct. Revenue is not characterized by whether or not it hits your bank account. Its amount is about who is the principal in the transaction, and its timing is about when the seller has done the activity to earn the money.

So, let's say I'm a payment processor, and my business model involves me collecting money on behalf of my customers. My customer makes a $100 sale, and it all goes into my bank account. That's still not my revenue, as I received the whole $100 on behalf of my customer. Separately, I charge my customer $2, for the work I did to process the transaction. That part is my revenue.