Agency jobs fall into several categories, with the differences based on the type of agency with which you work. Common forms of agencies include staffing agencies, advertising agencies, and federal agencies. Agencies are different from most businesses in that they tend to focus on particular aspects of a business, such as digital advertisements, rather than more consumer-focused products and services. For example, in a recruitment agency, you may help companies find and hire an employee with a rare set of skills, while at a creative marketing agency, you provide suggestions for unusual, attention-grabbing advertising campaigns. Regardless of type, you should expect to work closely with clients to ensure you meet their needs.