If you are building on Salesforce Industries, you have likely faced this decision: should you use OmniStudio FlexCards or Lightning Web Components (LWC) for your UI? Both are powerful, but they serve different purposes. Choosing the wrong one can cost you weeks of unnecessary development.

What Are FlexCards?

FlexCards are a declarative UI framework within OmniStudio. They allow you to build data-driven cards — customer summaries, account overviews, action panels — without writing code. You configure them through a visual designer, connect data via DataRaptors or Integration Procedures, and deploy them as Lightning components.

Key characteristics of FlexCards:

• No-code configuration: Drag-and-drop designer with conditional visibility, states, and child cards
• Built-in data binding: Connect directly to DataRaptors and Integration Procedures
• Action framework: Launch OmniScripts, navigate to records, call APIs — all from card actions
• Flyouts and child cards: Nested data display without building separate components
• Responsive by default: Automatically adapts to desktop and mobile layouts

What Are Lightning Web Components?

LWC is Salesforce’s modern programmatic UI framework. Built on standard web technologies (HTML, JavaScript, CSS), LWC gives you full control over the user interface.

Key characteristics of LWC:

• Full programmatic control: Custom logic, complex state management, event handling
• Standard web stack: HTML templates, JavaScript controllers, CSS modules
• Reusable across contexts: Works in Lightning Experience, Communities, Mobile, and embedded apps
• Wire service and Apex integration: Fetch data from any Salesforce object or custom Apex
• Component composition: Build complex UIs by composing smaller components

When to Use FlexCards

FlexCards are the right choice when your requirement is fundamentally about displaying data and triggering actions:

• Customer 360 views: Show account summary, recent interactions, open cases, and policy details in a single card
• Agent consoles: Give service agents everything they need on one screen with clickable actions
• Quick data displays: KPI dashboards, status indicators, summary panels
• Launching OmniScripts: FlexCard actions integrate natively with OmniScript guided flows
• Rapid prototyping: Build and iterate on UI layouts in hours, not days

The speed advantage is significant. A FlexCard that takes 2-4 hours to build and configure might take 2-3 days as a custom LWC — with the same visual result.

When to Use LWC

LWC is the right choice when you need custom interactivity beyond data display:

• Complex form logic: Multi-step forms with dynamic validation and cross-field dependencies
• Custom visualizations: Charts, graphs, drag-and-drop interfaces, map integrations
• Third-party library integration: Embedding external JavaScript libraries
• Cross-cloud components: Components that need to work outside the Industries Cloud context
• Performance-critical UIs: Fine-grained control over rendering and data loading

The Decision Framework

Requirement	FlexCards	LWC
Show data from Salesforce objects	Best fit	Works but slower to build
Customer 360 / summary cards	Best fit	Overkill
Launch OmniScripts from UI	Native integration	Requires custom wiring
Complex form validation	Limited	Best fit
Third-party JS libraries	Not supported	Best fit
Reuse outside Industries Cloud	Not portable	Fully portable
Speed of development	2-4 hours	2-3 days

Can You Use Both Together?

Yes, and this is often the best approach. Use FlexCards as the container for your data display, and embed LWC components inside FlexCards for the parts that need custom logic. OmniStudio supports embedding custom LWC within FlexCards, giving you the speed of declarative configuration with the power of code where you need it.

The bottom line: if your requirement is “show data and take action,” FlexCards win. If it is “build a custom interactive experience,” LWC wins. For most Salesforce Industries implementations, 70-80% of the UI can be built with FlexCards, with LWC filling the remaining gaps.

Mineffs: Your OmniStudio Partner

At Mineffs IT Services, we specialize in OmniStudio implementation including FlexCards, OmniScripts, DataRaptors, and Integration Procedures. Our team holds 22+ active Salesforce certifications with 6-7+ years of hands-on implementation experience across telecom, financial services, healthcare, insurance, and energy verticals.

Get in touch today to discuss how we can help with your next Salesforce project.