AI Automation/Retail & E-commerce

Boost AOV with AI-Powered Product Recommendations

A 5-person ecommerce team uses purchase and browsing data by feeding it into a custom AI recommendation model. This model generates personalized product suggestions via an API connected directly to your custom online store.

By Parker Gawne, Founder at Syntora|Updated Mar 9, 2026

Key Takeaways

  • A custom AI model analyzes your store's unique purchase and browsing data to generate personalized product suggestions.
  • The system connects to your custom storefront via a private API, avoiding the latency of third-party apps.
  • Syntora builds and deploys this recommendation engine, handing over all source code and documentation.
  • A typical build takes 4 weeks and delivers a model that can update recommendations in under 200ms.

Syntora builds custom AI product recommendation engines for ecommerce businesses. The system uses customer purchase history and browsing data to generate personalized suggestions via a low-latency FastAPI endpoint. For a custom online store, this approach can boost average order value by replacing generic plugins with a model trained on unique business rules.

The project's complexity depends on your data sources and their quality. A store with 12 months of clean Shopify data is a straightforward 4-week build. A business integrating Shopify, Klaviyo, and Google Analytics data with inconsistent user IDs will require more data unification work upfront.

The Problem

Why Do Ecommerce Operations Teams Struggle with Generic Recommendation Apps?

Many small ecommerce teams start with their platform's built-in recommendation tools, like Shopify's 'Product recommendations'. These tools typically only offer a basic 'customers who bought this also bought' logic. They cannot use individual browsing history, like a customer viewing a product three times in a day, to inform suggestions. The result is generic recommendations that ignore powerful user intent signals.

Next, teams often install a third-party app like Rebuy or LimeSpot. While more powerful, these apps run as black boxes. You cannot inspect the model's logic or add your own domain knowledge. For example, a 5-person team selling high-end cycling gear knows a specific carbon wheelset is incompatible with a certain frame. The app, unaware of this rule, recommends the incompatible part, leading to a customer purchase, a frustrating return, and erosion of brand trust. The app's data sync might also be delayed by 15 minutes, causing it to recommend recently out-of-stock items.

The structural problem is that off-the-shelf apps are built for the median store, not your specific catalog and customer behavior. They are architected for easy installation, which prevents deep integration with your business rules and real-time data. To truly personalize, you need a model that is trained on your data, reflects your unique product relationships, and is controlled by you.

Our Approach

How Syntora Builds a Custom Product Recommendation Engine

The first step would be a data audit. Syntora would connect to your store's database, whether it's on Supabase, PlanetScale, or directly through a platform API, and pull 12-24 months of order and browsing history. We would join this with data from other tools like Klaviyo or Google Analytics to create a unified customer profile. You would receive a data readiness report and a list of over 50 potential features to power the model.

Based on the audit, the technical approach would involve building a collaborative filtering model using a Python library like LightFM, which excels with sparse data typical in ecommerce. This model would be wrapped in a FastAPI service and deployed on AWS Lambda. This serverless architecture ensures responses are fast, typically under 200ms, and keeps hosting costs low, often under $50 per month, as you only pay for compute when a recommendation is requested.

The delivered system is a private API endpoint that your developers can easily integrate into your custom storefront. When a customer browses, your front end sends their user ID to the API and receives a list of personalized product SKUs to display. You get the full source code in your GitHub repository, a runbook for retraining the model, and a simple monitoring dashboard to track performance.

Off-the-Shelf Recommendation AppCustom Syntora Engine
Uses only aggregate purchase dataUses purchase history, browsing logs, and email data
Limited to pre-set rules like 'trending'Incorporates your specific business rules and product logic
500ms+ response time from external callsSub-200ms response time from a private API

Why It Matters

Key Benefits

01

One Engineer, From Call to Code

The person on the discovery call is the engineer who builds your system. No project managers, no communication gaps between sales and development.

02

You Own the Source Code

You receive the full Python codebase in your GitHub. There is no vendor lock-in. Your internal team or a new hire can take over the system at any time.

03

A Realistic 4-Week Timeline

A data audit happens in week one, a prototype model is ready in week two, and the production API is deployed and integrated by week four.

04

Transparent Support Model

After launch, an optional flat monthly retainer covers monitoring, model retraining, and bug fixes. No unpredictable hourly billing or surprise fees.

05

Built for Your Unique Catalog

The model learns the specific relationships and constraints in your product catalog, like which accessories are compatible, something generic apps cannot do.

How We Deliver

The Process

01

Discovery Call

A 30-minute call to understand your data, business rules, and goals. You receive a scope document with a fixed-price proposal within 48 hours.

02

Data Audit & Architecture Design

You provide read-only access to your store database and analytics. Syntora audits the data and presents the proposed model architecture for your approval.

03

Iterative Build & Integration

Weekly demos show you progress on the model. Syntora works directly with your developers to integrate the API, providing clear documentation for a smooth connection.

04

Handoff & Training

You receive the complete source code, a deployment runbook, and a training session for your team on how to monitor and retrain the recommendation model.

The Syntora Advantage

Not all AI partners are built the same.

AI Audit First

Other Agencies

Assessment phase is often skipped or abbreviated

Syntora

Syntora

We assess your business before we build anything

Private AI

Other Agencies

Typically built on shared, third-party platforms

Syntora

Syntora

Fully private systems. Your data never leaves your environment

Your Tools

Other Agencies

May require new software purchases or migrations

Syntora

Syntora

Zero disruption to your existing tools and workflows

Team Training

Other Agencies

Training and ongoing support are usually extra

Syntora

Syntora

Full training included. Your team hits the ground running from day one

Ownership

Other Agencies

Code and data often stay on the vendor's platform

Syntora

Syntora

You own everything we build. The systems, the data, all of it. No lock-in

Get Started

Ready to Automate Your Retail & E-commerce Operations?

Book a call to discuss how we can implement ai automation for your retail & e-commerce business.

FAQ

Everything You're Thinking. Answered.

01

What determines the project cost?

02

How long does a project like this take?

03

What happens if the recommendations are not accurate?

04

Why not just use a Shopify App for recommendations?

05

Why hire Syntora instead of a larger development agency?

06

What do we need to provide to get started?