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IT professionals in Cannes this week for Gartner's annual ITxpo have been told to prepare for a recession and to use technology to green the business; software-as-a-service and Web 2.0 also featured prominently in panel discussions and presentations.

Read all our coverage of the event here:

'Disruptive' internet challenges business, warn analysts

Web 2.0 'will drive business collaboration'

SAP unfazed by rise of SaaS model, says CEO

Use intelligent IT to green the business, IT chiefs told

IT leaders must prepare for bumpy economy

SaaS purchasing decisions 'are bypassing IT'

Public sector IT must deliver 'visible value' at every step

CIOs facing skills challenge as business assimilates IT