Русско-англо-русский юридический словарь

A services agreement is used to document a transaction where the seller provides a service to the buyer. Such an agreement may be appropriate for marketing services, advertising services, testing services, consulting services, management services or other professional services. (contracts.onecle.com)

An advertising campaign is a series of advertisement messages that share a single idea and theme which make up an integrated marketing communication (IMC). Advertising campaigns appear in different media across a specific time frame. (Wikipedia)

Seasonal demand: Some services do not have an all year round demand, they might be required only at a certain period of time. Seasons all over the world are very diverse. Seasonal demands create many problems to service organizations, such as: idling the capacity, fixed cost and excess expenditure on marketing and promotions. (Wikipedia)

A representative office is an office established by a company to conduct marketing and other non-transactional operations, generally in a foreign country where a branch office or subsidiary is not warranted. Representative offices are generally easier to establish than a branch or subsidiary, as they are not used for actual "business" (e.g. sales) and therefore there is less incentive for them to be regulated. (Wikipedia)