In ServiceNow, particularly within server-side development and scoped app architecture, it’s critical to understand the distinction between objects, methods, and functions — not for academic reasons, but because this understanding drives proper modularization, debugging efficiency, secure scoped design, and performance tuning.

But even more importantly, these concepts form the foundation of Object-Oriented Programming (OOP) — which ServiceNow’s JavaScript engine (server-side and client-side) utilizes through API design. This blog also examines the core architectural patterns (like encapsulation, separation of concerns, and modularization) underpinning scalable ServiceNow applications.

We further glance over the SOLID principles — a foundational architectural guideline in enterprise software development — and explore how each may apply to ServiceNow implementations.