A manager's environment is made up of constantly changing factors — both external and internal — that affect the operation of the organization. If a new competitor appears in the marketplace, the managerial environment is affected. If key clients take their business elsewhere, managers feel the impact. And if technological advances date an organization's current methods of doing business, once again, the managerial environment has to adapt. Although managers can't always control their environments, they need to be aware of any changes that occur, because changes ultimately affect their daily decisions and actions. For example, in the airline industry, deregulation opened up the market to new airlines, forcing existing airlines to be more competitive. Managers in existing airlines couldn't afford to ignore the cheaper airfares and increased service that resulted. Not only did managers have to identify the new challenge, but they also had to act quickly and efficiently to remain competitive.