Shopify-AP21 Integration Tuned For Your Business
$500/month. Cloud included. No hidden infrastructure costs.
A Shopify-AP21 integration customised for the needs of your business, supported by expert ecommerce engineers who specialise in both platforms.
Recognise the Symptoms?
Inventory Drift
Your team spends hours each week reconciling inventory between AP21 and Shopify. Overselling during promotions has become a recurring problem rather than a rare event.
Manual Order Processing
Orders sit in a manual queue because the sync dropped them. Fulfilment statuses require hand-updating. Partial fulfilments and cancellations create work that the integration should be handling.
Returns and Reconciliation
Returns create mismatches that finance has to untangle by hand. Exchanges don't adjust inventory correctly. Refunds don't reconcile cleanly with operational reporting.
Single-Person Dependency
The integration depends on one or two people. If they're unavailable, nobody can safely troubleshoot or modify the system. During peak trading, the team holds its breath.
Why most AP21-Shopify integrations struggle at scale
Basic connectors handle products, orders, and inventory at a surface level, but they rarely manage the full order lifecycle. Partial fulfilments, returns, exchanges, and cancellations all have operational and financial consequences that these integrations ignore. Error handling is minimal, monitoring is an afterthought, and the whole thing often depends on one person.
Off-the-shelf middleware products are more capable, but they're designed as products. They make assumptions about how your business operates. When your fulfilment logic or returns process doesn't fit the product's predefined configuration, you either change how your business works or accept manual workarounds. Fashion retail is operationally unforgiving, and an integration that only handles the standard path will create friction at every deviation.
Integration Configured to Your Operations
Fontis delivers a Shopify-AP21 integration that sits between a rigid product and a from-scratch custom build. Proven, production-tested integration blocks configured to how your business actually operates.
Core AP21-Shopify Sync
Bi-directional synchronisation of products, orders, customers, inventory levels, fulfilment statuses, and product images between Shopify and Apparel21.
Marketing Platform Sync
Retail customer profiles and in-store order data from Apparel21 sync into your marketing platform - Klaviyo, Emarsys, and others - enabling campaigns based on total customer activity across channels.
AP21 Loyalty & Rewards
Customers view loyalty tiers, check points, earn on online purchases, and redeem rewards through Shopify, connected to the AP21 loyalty engine.
Shopify POS Integration
Point-of-sale transactions in physical stores stay synchronised with the broader integration, keeping inventory and customer data consistent across channels.
$500/mo
Cloud included. No hidden infrastructure costs.
No separate cloud bills. No surprise infrastructure costs. One monthly fee that covers your integration, hosting, and support from the engineers who built it.
Four Things Worth Knowing
Total Cost Transparency
The subscription includes cloud hosting, infrastructure, and ongoing support. Compare what you're actually paying today; subscription, cloud, and agency hours for workarounds.
Configured for You
Off-the-shelf middleware optimises for the average case. A semi-custom integration adapts to your inventory rules, fulfilment logic, and operational workflows instead of requiring you to adapt to it.
Supported by the People Who Built It
Support comes from the engineers who designed your integration. No gap between the people who understand the architecture and the people answering your requests.
Built to Evolve
Vendor-agnostic. No commissions, no proprietary lock-in. Extend, modify, or connect additional systems without waiting on anyone else's roadmap.
The cost of poor integration
$1.7T
Annual global cost of inventory distortion (out-of-stocks and overstocks), equivalent to 6.5% of global retail sales
Source: IHL Group, 2025
62%
Of retailers in Australia and the USA have below 80% inventory accuracy
Source: Fluent Commerce, 2024
73%
Of consumers will switch brands after a negative experience, up from 42% in 2021
Source: TCN / OnePoll Consumer Survey, 2024
In post-mortems across our integration work, we've found that overselling is rarely caused by a broken API call. It is typically caused by unclear inventory rules: publishing on-hand stock instead of available-to-promise quantities, or failing to account for committed store allocations and in-transit returns.
Read our full AP21 integration guideCommon Questions
What AP21 version does this support?
The integration supports current AP21 versions. If you're unsure whether your setup is compatible, raise it during the consultation and we can assess quickly.
How long does implementation take?
A standard implementation runs four to eight weeks depending on the complexity of your fulfilment logic, the state of your AP21 data, and what existing integrations need to be decommissioned.
Can I migrate from an existing integration?
Yes. Most clients come to us from an in-house build or off-the-shelf middleware product. We assess the existing setup and plan a migration that avoids downtime during cutover.
What does the subscription include?
The monthly fee covers cloud hosting and infrastructure, the integration software, and ongoing support from the engineers who built your integration. There is a separate one-time setup fee for the initial configuration and implementation.
What if we need a data flow that's not in the standard offering?
The integration is designed to be extended. If your fulfilment logic or a specific workflow falls outside the standard configuration, we scope and price it separately, with nothing locked behind a third-party product roadmap.
Get Started Talk to us about your AP21 integration
30 minutes. No pitch deck. Just a practical conversation about your AP21 setup.