The only solution

for Enterprises looking past headless to a true composable e-commerce solution

Learn what’s powering the highest-performing 2% of all global e-commerce
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Modern e-commerce systems are adaptable, distributed, and composable—but at scale, off-the-shelf components fall short. Over the last 5 years, many developers have started to explore the “headless” direction, separating the front and back ends of their e-commerce platforms to deliver more manageable solutions. However, this option falls short for most large-scale commerce sites, which require even more detailed control and low-latency performance, given the intense requirements of their systems. These teams have begun looking for composable low-latency solutions, and in this instance, Harper is unbeatable.

The only solution

for Enterprises looking past headless to a true composable e-commerce solution

Learn what’s powering the highest-performing 2% of global e-commerce.
Talk to a Dev
Modern e-commerce systems are adaptable, distributed, and composable—but at scale, off-the-shelf components fall short. Over the last 5 years, many developers have started to explore the “headless” direction, separating the front and back ends of their e-commerce platforms to deliver more manageable solutions. However, this option falls short for most large-scale commerce sites, which require even more detailed control and low-latency performance, given the intense requirements of their systems. These teams have begun looking for composable low-latency solutions, and in this instance, Harper is unbeatable.

Watch Krista Code a Next.js
Commerce App on Harper

Watch Krista Goralczyk, Principal Solutions Architect at Harper as she builds a Next.js e-commerce application on top of Harper in 1-hour.
Watch the Video

From Complexity to Clarity: The Enterprise Solution for Scalable E-Commerce

Modern e-commerce systems are adaptable, distributed, and composable—but at scale, off-the-shelf components fall short. Over the last 5 years, many developers have started to explore the “headless” direction, separating the front and back ends of their e-commerce platforms to deliver more manageable solutions. However, this option falls short for most large-scale commerce sites, which require even more detailed control and low-latency performance, given the intense requirements of their systems. These teams have begun looking for composable low-latency solutions, and in this instance, Harper is unbeatable.
Composable
Architecture
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Headless
Architecture

If you are looking at headless architecture or composable, Harper is the only option focused on the highest performance

For situations where web performance impacts revenue, custom multi-process components are suboptimal (i.e. MongoDB connecting to Fastify, Vercel to PostgreSQL, etc.). With each additional process requiring integration, intermediary serialization, and network processes, these systems are computationally inefficient. That’s why the top 2% of E-Commerce traffic runs on fused technology, where database, cache, application, and messaging systems are unified into a single process.

Fused and Distributed Microservices

Building data-dependent microservices that require separate services for data retrieval is counterproductive. At some point, services become too micro, leading to excessive network calls, higher latency, and increased complexity. Fused technology eliminates these bottlenecks by combining data and application functions into a single binary that can be easily geo-distributed and synchronized. This ensures minimal network and server latency for all—without sacrificing scalability.
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Exclusive First Look: Next-Gen E-Commerce Architecture

High-Performance Distributed Applications: The Future of Scalable Systems
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From Chaos to Control: Simplifying E-Commerce Infrastructure

E-commerce architecture is built with components—databases, caches, messaging, and applications. But when these elements exist as separate, loosely connected processes, they introduce unnecessary complexity, latency, and maintenance overhead.

Unifying E-Commerce for Seamless Scalability

Fused technology reimagines this paradigm by unifying all core functions into self-contained, high-performance components that operate across geographies. Instead of juggling multiple infrastructure layers, you get a streamlined system that is easier to deploy, manage, and scale—without sacrificing flexibility or control.With a component-driven architecture, you can build and optimize your stack using familiar technologies, like JavaScript, without compromising performance.
Documentation
// Adding the @export directive when defining a table creates a REST endpoint 

type Owner @table @export { 
    name: String
    age: Int 
    address: String 
    phone: String 
    email: String 
    dogId: ID @indexed # Foreign key referencing the Pet table (Dog ID)
    dog: [Dog] @relationship(from: dogId) # Relationship to the Dog table, linked by dogId
}...

type Dog @table @export {
    id: ID @primaryKey # The unique identifier for each Dog (Primary Key)
    name: String 
    breed: String 
    age: Int    
}  

// The REST endpoint can be accessed using the following URL when running a Harper application component on your local machine:
curl 'http://localhost:9926/Owner/'

The Fused Technology Advantage

AI, Personalization, & Next-Level Site Search—Without the Lag

Harper’s fused technology powers real-time AI, dynamic personalization, and seamless experimentation without the latency of traditional architectures. Harper lets you build smarter, faster, and more adaptive commerce experiences.
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Built for Engineers Who Hate Slow, Fragile Systems

Harper is for teams that don’t settle for "good enough." If your architecture is buckling under enterprise-scale traffic, if you're frustrated by the limits of traditional composable commerce, or if you're constantly fighting latency, complexity, and vendor constraints, it’s time to rethink your foundation.
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