The marketing budget is often overlooked in companies. Companies expect work to come to them through word of mouth or offers sent here and there. To move a business forward you also have to look for new customers, and the good news is that there is no longer any need to go door to door. When the economy is going well, all is well, but companies that have a well-adapted marketing budget, survive more easily during crises or difficult times . Of course you also have to know how to adapt to changing and evolving market very quickly .