This white paper explains the complexities of successfully deploying SaaS models, emphasizing that serving multiple organizations with unique requirements and strict SLAs demands robust engineering. It outlines key architectural strategies including composition, service-oriented architecture, compartmentalization, and metadata-driven design to ensure flexibility, security, and scalability. Best practices such as aspect-oriented and declarative programming, configuration-based customization, and plug-in patterns are recommended for adaptability. Database features like views, sharding, and row-level security are highlighted for multi-tenancy. The paper also warns against pitfalls like over-customization and buzzword-driven design, stressing iterative approaches for long-term SaaS success.

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