LWC Architecture for Enterprise Apps: Patterns That Scale Beyond a Single Component, Michał Bajdek
Building one LWC component is easy. Building an enterprise application with 50+ components that communicate, share state, and remain maintainable across multiple teams – that’s where things get interesting.
As a Salesforce Architect working on large-scale implementations, I’ve seen LWC projects start clean and gradually turn into an unmaintainable mess. The problem is rarely the framework itself – it’s the lack of architectural decisions made early on.
In this session, I’ll share the patterns and principles that separate a collection of components from a real enterprise frontend:
- Communication patterns decision tree: When to use events, LMS, props, or a custom pub/sub – and why most teams pick wrong
- State management strategies: How to handle shared state without turning every component into a spaghetti of @wire and imperative calls
- Service layer in LWC: Abstracting Apex calls so your components don’t become tightly coupled to backend implementation
- Component composition: Building truly reusable components vs the “reusable” components nobody actually reuses
- Error handling architecture: A unified approach instead of try-catch chaos scattered across 50 components
- Performance at scale: Lazy loading, caching strategies, and render cycle optimization for data-heavy UIs
- Testing strategy: Unit testing LWC with Jest in a way that actually catches bugs, not just inflates coverage numbers
Each pattern comes with real code examples and a clear “when to use / when to avoid” guide.
I’ll also cover common mistakes I see in code reviews: oversized components that do everything, event chains that nobody can debug, and the classic “let’s put everything in a single LWC page” approach.
You’ll leave with an LWC architecture blueprint you can adapt for your own enterprise project.