There is probably a different Host Agency model for every Host Agency. However, there are certain basic characteristics that you can rely on that exists with all Host Agencies. Here are a few of the most obvious.

IATA/ARC appointed Host Agencies.

Just about all Host Agencies, particularly the National Host Agencies are IATA accredited. There are two types of accredidation, ARC and TSI. ARC, the oldest, which stands for Airlines Reporting Corporation allows the agency to use one or more of the GDSs (Global Distribution System). The more popular are Sabre, Amadeus, Apollo and WorldSpan. ARC agencies may have contracts with one or more of these suppliers. The ARC accredited agencies was once the standard for all store front operations. About 30 % of all Host Agencies use GDS while others are using web based booking engines. The GDS is an important booking tool for Corporate agents and agencies because of its flexibility to book air. Many of the older travel agents still prefer the use of a GDS.

IATA/TSI appointed Host Agencies

Many Host Agencies preferred to eliminate their ARC appointment or just elected, if a new agency, to eliminate the ARC and the GDS. Reasons include the cost of these programs, the chaotic style of the GDS, little or no commissions, the constant threat of airline debit memos and the increased activity of credit card fraud. If air is an important factor for making a choice between ARC and TSI, then its ARC for you. Of course you can still book air through 3rd party suppliers and air consolidators. There is no difference between the two IATA accredidations as to benefits and the IATAN photo ID card.

CLIA accredited Host Agencies

CLIA which stands for Cruise Line International Association is the marketing arm of its major cruise line members. Their accreditation is used by many Host Agencies who specialize in selling cruises. The CLIA Host Agency is also able to book other travel, however, it is not as widely accepted as IATA with suppliers. All of the National Host Agencies belong to both IATA and CLIA.

TRUE and TRAVEL SELLER Only Host Agencies

Although gaining some respect with the newer Host Agencies, these providers of ID numbers, maintained by IATA, fall short of being able to provide a full array of suppliers. These are more suited for agents who primarily use suppliers accepting these IDs.

TRAVEL Franchises

Most travel franchises are cruise oriented franchises but also provide other forms of travel. There are usually royalty fees involved and they tend to be very structured in their training,  technology and marketing programs. Franchises are really another Host Agency model and should  be considered when selecting your Host Agency.

NON-TRADITIONAL Host Agencies

In order to complete the more popular business models of Host Agencies, it would be prudent to say a few words about these non-traditional or more popularly know as MLMs (Multi-level-marketing) or card mills. These agencies are primarily focused on selling the business opportunity such as recruiting agents, selling websites and other non-travel products as opposed to selling pure travel. A small percentage of their gross revenue is attributed to travel commissions. Agents seeking to sell travel should avoid these Host Agency models unless they also enjoy being a network marketer.