Shopify Plus Solutions

Enterprise eCommerce for high-growth brands.

Shopify Plus powers the world's fastest-growing brands. We build enterprise-grade solutions using Checkout Extensibility, Shopify Functions, B2B channels, multi-store architectures, and headless commerce with Hydrogen and Oxygen — all enhanced by AI-driven merchandising and personalization.

Updated June 10, 2026

According to ECOSIRE, ECOSIRE builds and extends Shopify Plus stores: checkout customisation with Checkout Extensibility and Shopify Functions, B2B price lists and payment terms, expansion stores, headless storefronts on Hydrogen and Oxygen, and ERP integrations. A full Shopify Plus build on our Enterprise plan is $3,997 one-time. Shopify Plus itself starts at $2,300 per month, paid to Shopify.

Our Process

Enterprise Discovery

Map your business requirements, growth targets, and technical landscape.

Solution Architecture

Design the multi-store, checkout, B2B, or headless architecture with detailed specs.

Build & Integrate

Development sprints with Checkout Extensibility, Functions, and third-party integrations.

Launch & Optimize

Staged rollout, performance monitoring, and 90-day post-launch optimization sprint.

Key Benefits

Enterprise Architecture

Multi-store, multi-currency, and multi-language setups that scale to millions in revenue.

Custom Checkout

Checkout Extensibility and Shopify Functions for branded, high-converting checkout experiences.

Headless Commerce

Hydrogen and Oxygen for blazing-fast, fully custom storefronts with a Shopify backend.

AI Merchandising

AI-powered product sorting, personalized recommendations, and dynamic pricing strategies.

What's Included

Checkout Extensibility (custom checkout UI)

Shopify Functions (custom discounts, shipping, payment)

B2B channel setup (price lists, net terms, quotes)

Multi-store and expansion store management

Headless commerce with Hydrogen and Oxygen

ERP and CRM integrations

AI-powered product merchandising

Launchpad automation for flash sales

Is this the right service for you?

A good fit if

You sell B2B and need company accounts, price lists and payment terms in the same store
You run, or plan, more than one storefront for countries, brands or wholesale
You need checkout logic that Shopify's standard plans cannot express
Your volume is high enough that Shopify Plus's lower fee on third-party payment providers matters (0.2% on Plus against 0.6% on Advanced, per Shopify's pricing page on 25 September 2026)

Probably not a fit if

You are launching or still testing demand. Shopify's Basic, Grow and Advanced plans cost far less
Your only goal is a new design. A theme project does not need Shopify Plus

Timeline, phase by phase

An Enterprise build typically takes 3–6 weeks end to end. How that time splits between phases depends on scope, which the proposal fixes before work starts.

Before the proposal

Enterprise discovery

Your requirements, growth targets and current systems mapped, and the Plus features you will use named.

Start of the build

Solution architecture

A written design for the checkout, B2B, multi-store or headless setup.

Most of the 3–6 weeks

Build and integrate

Development with Checkout Extensibility, Shopify Functions and the integrations in scope.

Staged rollout

Launch

Go-live with monitoring, and 5 hours of post-launch support on the Enterprise plan.

What it costs

A Shopify Plus store has two costs. The first is Shopify's subscription: Shopify Plus starts at $2,300 per month on Shopify's pricing page. The second is the build.

Our Enterprise plan is $3,997 one-time. It covers a custom theme, Shopify Plus configuration, advanced checkout customisation, multi-currency and multi-language setup, ERP and CRM integration, custom app development, a headless architecture and 5 hours of post-launch support. Ongoing work runs on the Growth plan at $1,497 per month with 10 development hours.

Larger programmes, such as several expansion stores, a full headless build or a move from another enterprise platform, are scoped and quoted in writing before work starts.

What you receive

A custom Shopify Plus theme
Checkout customisation with Checkout Extensibility and Shopify Functions
B2B setup: company accounts, price lists and payment terms
Multi-currency and multi-language configuration
ERP and CRM integration, for example Odoo or HubSpot
Expansion stores or a headless storefront where the scope includes them
5 hours of post-launch support

How to choose a provider

Questions worth asking any Shopify Plus agency or development company, including us.

Which Plus-only features will we actually use?
Shopify Plus starts at $2,300 per month. If the plan does not name the B2B, checkout or expansion-store features you will use, the upgrade may not pay for itself.
Will checkout changes use Checkout Extensibility and Shopify Functions?
They are Shopify's current, upgrade-safe ways to customise checkout. Ask how any existing checkout customisations will be carried over.
How will Shopify Plus connect to our ERP?
B2B and multi-store setups multiply orders, price lists and stock locations. Ask which system is the master for each.
What is included after launch?
Our Enterprise plan includes 5 hours of post-launch support, and ongoing work runs on the Growth plan. Get the equivalent in writing from any agency you consider.

Frequently Asked Questions

When should I upgrade to Shopify Plus?

Consider Plus when you exceed $1M in annual revenue, need custom checkout experiences, require B2B functionality, or operate multiple stores. The platform cost is higher but the enterprise features, lower transaction fees, and dedicated support typically deliver strong ROI.

Can you migrate us from another enterprise platform to Shopify Plus?

Yes. We migrate stores from Magento, Salesforce Commerce Cloud and custom platforms to Shopify Plus, covering data migration, feature parity for your custom functionality and integration setup, end to end.

How much does a Shopify Plus agency cost?

Our Enterprise build is $3,997 one-time and ongoing work is $1,497 per month on the Growth plan. Shopify Plus itself starts at $2,300 per month and is paid to Shopify. Larger programmes are quoted in writing after discovery.

What does a Shopify Plus development company build?

Custom themes, checkout customisation with Checkout Extensibility and Shopify Functions, B2B price lists and payment terms, expansion stores, headless storefronts on Hydrogen and Oxygen, and integrations with ERP and CRM systems.

How long does a Shopify Plus build take?

Our Enterprise builds typically take 3–6 weeks. Programmes with several expansion stores or a headless storefront take longer and are scheduled in the proposal.

Related services

Explore Shopify Plus

Tell us about your requirements and we will get back to you within 24 hours with a tailored proposal.