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  • Harish Jagtiani thinks this is interesting:

Mainframe providers (leasers) provided for a fee professional service to develop ‘custom software’ to meet the business requirements that it should serve. However, this software could not be utilized by other organizations as these are custom developed to serve one organization’s specific requirements. The cost of professional services was also on ‘pay-per-use’ model though that term ‘pay-per-use’ was absent then


Cover of Architecting Cloud SaaS Software


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