Dec 8, 2025 | 3 minute read
written by David Stover
Composable commerce promises flexibility, but the day-to-day reality is far more complex. Modern B2B organizations operate across multiple systems, multiple teams, and multiple data models. Every service introduces its own APIs, its own rules, and its own operational requirements. Without a clear approach to integration and data extensibility, even well-designed architectures become hard to scale and expensive to maintain.
To build a future-ready B2B stack, teams need a reliable way to integrate systems and a structured way to extend the commerce data model without workarounds or custom infrastructure.
Even with strong integrations, modern commerce requires flexibility in how data is stored, shaped, and exposed. Every business carries unique rules, custom objects, hierarchy logic, pricing attributes, and operational data that the commerce platform does not natively support.
Most teams try to solve this with workarounds: storing data in third-party systems, pushing custom fields into unrelated objects, or creating new services that fragment the integration landscape. These approaches add risk, slow development, and weaken performance.
Commerce Extensions solve this problem directly. They give teams a structured, scalable way to create custom data models and APIs without managing infrastructure or maintaining separate services.
Purpose-built custom APIs
Define exactly the data structures your business needs and expose them as RESTful APIs that cleanly extend your commerce platform.
High performance
Commerce Extensions are optimized for large, private datasets with fast read and write performance across storefront and backend operations.
Multidimensional filtering and querying
Support both simple lookups and complex filtering logic without building custom indexing or query engines.
Scalability and flexibility
Commerce Extensions grow with your data needs. There is no performance degradation during peak traffic or global expansion.
Security and governance
Your data is isolated, protected, and governed under the same security model that powers the Elastic Path platform.
Instead of stitching together multiple external systems or maintaining custom services, Commerce Extensions provide a native way to shape, store, and serve the data that makes your business unique.
An Integration Platform as a Service centralizes how systems connect, communicate, and exchange data. Elastic Path Composer is the only fully commerce-integrated iPaaS, purpose-built to simplify these patterns.
Streamlined integration
Composer ships with pre-built connectors and instant-on integrations that eliminate repetitive wiring and reduce time to market.
Real-time visibility
Teams get monitoring, alerting, and operational insights that ensure data flows continuously and reliably.
Scalability
As your architecture evolves, Composer scales with you. New systems, new regions, and new workflows require no re-architecture.
No hosting or operational burden
We host and manage all integration infrastructure. There are no cloud costs, no new tooling, and no additional training required.
Reduced complexity
Having integrations centralized and governed reduces maintenance overhead and simplifies long-term operations.
If your goal is to reduce the cost and time required to orchestrate a composable architecture, Composer provides the fastest path forward.
Modern commerce is no longer defined by APIs alone. As architectures become more distributed, teams need a reliable foundation for how systems integrate and how the commerce data model evolves.
Commerce Extensions handle custom data models and APIs. iPaaS handles integration.
Together, they create the operational backbone that makes B2B commerce stable, scalable, and cost-effective.
These capabilities are no longer optional. They are the foundational layer that lets teams innovate quickly without increasing operational complexity.
The best part is that adopting this foundation no longer requires a large upfront investment. You can explore Commerce Extensions, Composer and the full Elastic Path platform with a 30-day free trial. It is the fastest way to see how a custom API engine and commerce-intelligent iPaaS can accelerate your roadmap.
Start your trial today and see what a modern B2B stack makes possible.
Schedule a demo to see how Elastic Path delivers unified commerce for leading global brands.