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API & Third-Party Integrations

API & Third-Party Integrations

Connect your systems. Automate operations. Build a truly connected ecommerce ecosystem.

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Modern ecommerce does not run on a single platform. It relies on multiple systems working together — ecommerce storefronts, ERP, CRM, EPOS, warehouses, payments, marketplaces and marketing tools.

At StreamMarket, we design and build robust API and third-party integrations that connect your ecommerce platform with the systems your business depends on. Our integrations eliminate manual work, improve data accuracy and create a reliable flow of information across your entire organisation.

These integrations are often the foundation of End-to-End Ecommerce Systems, ensuring your technology stack works as one — not as disconnected tools.

What Are API & Third-Party Integrations?

An API (Application Programming Interface) allows different systems to communicate and exchange data automatically.

In ecommerce, this means:

  • Orders flow instantly from website to operations
  • Inventory updates across all channels in real time
  • Customer data stays consistent across platforms
  • Pricing, promotions and tax rules remain aligned
  • Reporting reflects accurate, unified data

Third-party integrations connect your ecommerce platform to external tools, while APIs ensure data moves securely, reliably and at scale.

Why API Integrations are Critical for Ecommerce Growth

As ecommerce businesses grow, manual processes quickly become a bottleneck.

Well-built integrations help you:

  • Remove manual data entry
  • Reduce human error
  • Speed up order processing
  • Maintain real-time stock accuracy
  • Improve customer experience
  • Support multi-channel selling
  • Scale operations without increasing admin workload

Without strong integrations, growth creates complexity. With them, growth becomes manageable.

What StreamMarket Integrates

We design integrations across your entire ecommerce and operations ecosystem.

Ecommerce Platform Integrations

We integrate APIs with:

  • Magento / Adobe Commerce
  • Shopify & Shopify Plus
  • WooCommerce
  • Custom or headless ecommerce platforms

This allows your storefront to act as the customer-facing engine while business operations run efficiently in the background.

ERP & Business Operations Integration

Your ERP is the backbone of your ecommerce operations.

We integrate ecommerce platforms with StreamMarket ERP to manage:

  • Products and catalogues
  • Inventory and stock rules
  • Pricing and customer-specific logic
  • Orders, invoices and returns
  • Operational workflows and reporting

If your business uses another ERP, we can scope and quote a custom ERP integration based on your system, data structure and requirements.

ERP integrations are commonly delivered as part of End-to-End Ecommerce Systems, ensuring operational consistency across all channels.

CRM Integration & Customer Data Flow

We connect your ecommerce platform with CRM systems to ensure customer data is always up to date.

This enables:

  • Unified customer profiles
  • Accurate order and interaction history
  • Automated customer segmentation
  • Better sales and support workflows
  • Smarter marketing automation

CRM integrations work best when paired with B2B & B2C Website Development, allowing customer behaviour to drive personalised experiences.

EPOS & In-Store Integration

For businesses with physical retail locations, we integrate ecommerce with in-store systems to ensure a consistent experience.

This supports:

  • Online and in-store stock synchronisation
  • Click & Collect workflows
  • In-store returns for online orders
  • Unified promotions and pricing
  • Customer and loyalty data alignment

EPOS integrations are especially valuable for retail chains and mobility businesses operating across multiple locations.

Warehouse, Fulfilment & Logistics Integration

We integrate ecommerce platforms with warehouse and fulfilment systems to automate order handling.

This enables:

  • Instant order routing
  • Automated stock deductions
  • Shipping label generation
  • Real-time fulfilment updates
  • Accurate delivery communication to customers

These integrations are critical for Multi-Store Ecommerce and high-volume operations.

Payments, Marketplaces & External Services

We integrate with essential ecommerce services, including:

  • Payment gateways and digital wallets
  • Buy Now, Pay Later solutions
  • Marketplaces and shopping feeds
  • Shipping and courier services
  • Marketing and analytics tools

All integrations are designed to work together — not in isolation.

Reliability, Security & Integration Governance

Integration is not just about connectivity — it’s about reliability.

Our integrations are built with:

  • Secure authentication and access control
  • Data validation and error handling
  • Logging and monitoring
  • Retry and fail-safe mechanisms
  • Scalable architecture for future growth

This ensures your systems remain stable, even as transaction volumes increase.

Our API & Integration Delivery Process

We follow a clear, structured process to ensure smooth delivery:

  • Discovery & System Audit

    We analyse your current systems, data flows and operational challenges.

  • Integration Architecture & Mapping

    Clear definition of data structures, logic and responsibilities between systems.

  • Development & Implementation

    API development, third-party connections and workflow automation.

  • Testing & Validation

    End-to-end testing of data sync, edge cases and failure scenarios.

  • Go-Live & Monitoring

    Controlled deployment with active monitoring and performance checks.

  • Ongoing Support & Optimisation

    Maintenance, enhancements and scaling as your business evolves.

    Integrations are treated as long-term infrastructure — not one-off builds.

Real-World Integration Use Cases

B2B Ecommerce Automation

Trade orders sync from website to StreamMarket ERP, reducing manual processing and errors.

Retail + Online Synchronisation

EPOS, ecommerce and warehouse systems stay aligned, enabling Click & Collect and in-store returns.

Multi-Channel Selling

Products, stock and orders remain consistent across ecommerce stores and marketplaces.

Migration & Replatforming Support

Integrations rebuilt or optimised as part of Platform Migrations, ensuring continuity during change.

Why Choose StreamMarket
for Integrations

  • Deep expertise in ecommerce integrations and automation
  • Strong focus on operational reliability and data accuracy
  • Seamless alignment with StreamMarket ERP
  • Experience across B2B, B2C and hybrid business models
  • Scalable solutions designed for long-term growth
  • Ongoing support beyond initial implementation

We build integrations that support how your business actually works.

EPOS Integration FAQs

Can you integrate with our existing systems?

Yes — we design integrations around your current setup. External ERP integrations are scoped and quoted based on complexity.

Will integrations slow down our website?

No — integrations are built asynchronously and optimised for performance.

Do integrations require ongoing maintenance?

Yes — APIs evolve. We provide ongoing monitoring, updates and support through Website Maintenance & Support.

Are integrations secure?

Absolutely. Security and data integrity are core to our integration approach.

Can integrations support future growth?

Yes — all integrations are built with scalability in mind.

Ready to Connect Your
Ecommerce Ecosystem?

If disconnected systems are slowing your business down, we’ll help you build integrations that create clarity, speed and control.

Choose your next step:

  • Start an Integration Discovery Call
  • Request an Integration Scope & Quote
  • Speak with a Commerce Solutions Specialist

Or get in touch directly

Book a Discovery Call
Request a Quote