B2B commerce faces unique challenges due to its complexity. Companies often juggle multiple systems, teams, and data models. Each service brings its own APIs and operational rules, making integration a significant hurdle. Without a clear strategy for integration and data management, even well-built architectures can become difficult to scale and costly to maintain. To address these issues, businesses need effective solutions for integrating systems and extending their commerce data model without relying on workarounds. Commerce Extensions offer a structured way to create custom data models and APIs tailored to specific business needs. They allow companies to define their required data structures and expose them as RESTful APIs. This approach ensures high performance, allowing for fast data operations without performance drops during busy periods. Extensions support complex filtering and querying, making it easier for businesses to handle their unique operational data. By using Commerce Extensions, companies can avoid the risks associated with fragmented integrations and enhance their overall performance. Integration Platform as a Service (iPaaS) streamlines how systems connect and share data. Elastic Path Composer stands out as a fully commerce-integrated iPaaS designed to simplify these integration processes. It includes pre-built connectors that cut down on setup time and provide real-time visibility into data flows. The platform scales seamlessly as a company's architecture evolves, eliminating hosting burdens and reducing operational complexity. This centralized approach to integration not only lowers long-term maintenance costs but also allows teams to focus on their core business functions rather than managing infrastructure.