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Aggregated buying 

A form of customer union where 

buyers collectively purchase a number of items at the same 

price and receive a volume discount.

Aggregators 

An alternative term for price comparison 

sites. Aggregators include product, price and service 

information, comparing competitors within a sector such 

as financial services, retail or travel. Their revenue models 

commonly  include  affiliate  revenues  (CPA),   pay-  per-  click 

advertising (CPC) and display advertising (CPM).

Agile development 

An iterative approach to developing 

software and website functionality with the emphasis on 

 face-  to-  face communications to elicit, define and test 

requirements. Each iteration is effectively a mini software 

project including stages of planning, requirements analysis, 

design, coding, testing and documentation.