Introducing Large ICT Systems - Scale

+ allows organisation to compete with other organisations 

+ helps to gain management information 

+ syncs with EPOS system 

+ manages orders 

- larger systems are mission-critical organisations cannot function without them 

- often involve more than one site and need offices and equipment to run 

- need for large number of staff 

- the changeover to the new system requires planning to ensure the company can still function during the changeover 

NHS - used nationally files are stored about patient locally and then can be transferred when needed 

WWW - world wide web contains a large number of information people access all at once through different terminals 

In-house - specialist skilled staff within the organisation create 

External Consultants - external software company will implement SDCL model 

Off the Shelf - systems available there and then