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Build an Open-Source Composable CDP to Unify Customer Data

Your customer data is scattered across different platforms like your e-commerce store, forms, and email tool. This fragmentation makes it impossible to see the full customer journey, leading to generic marketing, missed opportunities, and lower conversion rates.

This playbook provides a developer-focused guide to building a powerful, low-cost Composable Customer Data Platform (CDP). By leveraging the open-source strength of RudderStack, you will capture rich e-commerce events from WooCommerce, unify them into a single customer profile, and then sync this intelligent data into Brevo. The result is a unified view of your customer that powers highly personalized and effective marketing automation.

Expected Outcomes

  • Break down data silos to achieve a single, unified view of the customer journey.
  • Enable hyper-personalized email campaigns based on real-time user actions.
  • Increase lead-to-customer conversion rates by delivering relevant messages at the right time.
  • Establish a sophisticated data infrastructure at a fraction of the cost of proprietary platforms.
  • Maintain full ownership and control over your valuable first-party customer data.

Core Tools in This Stack

RudderStack

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RudderStack is a composable Customer Data Platform (CDP) built for developers. It enables businesses to collect customer data from every source, unify it in their existing data warehouse, and activate it across their entire tool stack.

Key Features
  • Composable architecture
  • Event Stream for data collection
  • Warehouse Actions (Reverse ETL)
  • Identity Resolution
  • Real-time Audience Builder
  • Profiles API for unified customer views
  • Extensive source and destination integrations
Ideal For

Company Size: Micro, Small, Medium, Large

Industries: Technology & Software, Business & Professional Services, Retail & E-commerce, Creative & Media, Other

Pricing

Model: Free Tier, Usage-Based, Custom/Enterprise

Tier: Mid-range

Ease of Use

Medium

WooCommerce

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A flexible, open-source e-commerce platform built on WordPress. It allows users to create a highly customized online store to sell anything, anywhere.

Key Features
  • Open-source and fully customizable
  • Seamlessly integrates with WordPress
  • Extensive marketplace for themes and extensions
  • Sell physical, digital, and subscription-based products
  • Built-in payment processing (WooPayments) and support for major gateways
  • Configurable shipping options and tax calculations
  • Built-in blogging and content marketing capabilities
  • REST API for developers
Ideal For

Company Size: Micro, Small, Medium, Large

Industries: Technology & Software, Business & Professional Services, Retail & E-commerce, Creative & Media, Education & Non-Profit, Health & Wellness, Other

Pricing

Model: Free, Paid

Tier: Low

Ease of Use

Medium

Brevo

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Brevo is an all-in-one marketing platform that empowers businesses to build customer relationships through email campaigns, transactional emails, SMS messages, chat, CRM, marketing automation, and more.

Key Features
  • Email & SMS Marketing Campaigns
  • Marketing Automation Workflows
  • Transactional Email & SMS
  • Integrated Sales CRM
  • Live Chat & Chatbots
  • Landing Page Builder
  • A/B Testing
  • WhatsApp Campaigns
Ideal For

Company Size: Micro, Small, Medium, Large

Industries: Technology & Software, Business & Professional Services, Retail & E-commerce, Creative & Media, Education & Non-Profit, Health & Wellness, Other

Pricing

Model: Freemium, Subscription

Tier: Low-Mid

Ease of Use

Medium

The Workflow

graph TD subgraph "Open-Source Composable CDP" direction LR N0["RudderStack"] N1["WooCommerce"] N2["Brevo"] N1 -- "Sends e-commerce events" --> N0 N0 -- "Routes transformed events (identify, track)" --> N2 end classDef blue fill:#3498db,stroke:#2980b9,stroke-width:2px,color:#fff; classDef green fill:#2ecc71,stroke:#27ae60,stroke-width:2px,color:#fff; classDef orange fill:#f39c12,stroke:#d35400,stroke-width:2px,color:#fff; class N0 blue; class N1 blue; class N2 blue;

Integration Logic

  • RudderStack Event Streams for Brevo

    This integration uses the RudderStack WordPress plugin on a WooCommerce site to capture and send e-commerce events (e.g., Order Completed, Product Added, Checkout Started) to the RudderStack data plane. RudderStack acts as the central pipeline, receiving these events from the WooCommerce source. Within RudderStack, you connect this source to a Brevo destination. RudderStack then transforms and routes the event data to Brevo's API. For example, a user registration or order event triggers an 'identify' call to create or update a contact in Brevo, while events like 'Product Viewed' trigger 'track' calls, which are logged as custom events against the contact's profile. These events can then be used in Brevo to segment audiences and trigger automated marketing campaigns.

Unlock Your Single Customer View

Learn to build a CDP that connects scattered data to personalize marketing and boost conversions.