To maximize their benefit, SaaS solutions need to integrate with existing enterprise systems. Depending on the business requirements and the integration capabilities of the chosen SaaS product, the integration approach may not be trivial. While a comprehensive API offered by SaaS is a must-have, in most cases a custom SaaS integration layer will be needed to comply with SOA principles and to facilitate integration with existing systems.

In this blog post I will provide an overview of capabilities that a typical SaaS integration layer should provide, and identify integration products that best fit those capabilities.

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