The practice of advertisement has being with us for so many years, good companies understand that they cannot light a candle and put it under the bed, any company that feel that they are doing something better want to come out and tell they people, possibly customers about what they have, this concept have necessitated the need for advertising because every company wants to show what they have. In identifying a very good advertising agency should be based on their track record which is a very through assessment of their professional competence, because in this day and age advertising has being very expensive and even once a company come out with a poor advertisement it becomes a very big poor tag on the image of the company so an advert can make or break the company. Management by all standard must do due diligence to ensure that they select a very credible organization that has being try and tested to ensure that they can deliver a very credible advert that will meet modern standard and industry standard. We all know for a fact that when a company down a good adverts the consistency in satisfying the customer now depends on a very credible sales force who will work to ensure that they are able to meet demand from the customers and not disappoint the customer to they will not become dissatisfied, l have seen a lot of companies that did not prepare well in advance before advert so the demand became more that the supply that the company can handle and this situation really affect the reputation of the organization. My advise is that before advert companies must put down contingency measures to ensure that they can handle or situations and be able to satisfy their customers on time. In seeking the services of external agencies its sometimes a recognition of the fact that the task ahead cannot be than alone by internal agency or the internal agency do not have the expertise to conduct and manage the task that has being assigned to them. external agencies must often have more competent skilled workers than internal agency because they may have expertise in various different disciplines in the advertising business hence the need to go in for their services.