Shrinking IT budgets in the recessionary economy will make the software-as-aservice model a more viable alternative than the traditional license model for new software investments, which will in turn offer new opportunities for integration software vendors that should far exceed the integration opportunities offered by service-oriented architecture. Worldwide, SaaS in the four largest application sectors — customer relationship management, enterprise resource planning, collaboration and content management, and human capital management — is expected to grow more than 27% this year to $7.9bn, and grow over 25% next year to $9.9bn, according to research by The 451 Group’s Tier1 Research subsidiary. The US market will account for nearly two-thirds of that spending, although Asia-Pacific will be the fastest-growing region.

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