Shopify Plus development services cover building, migrating, and customizing enterprise level Shopify stores, including custom theme development, B2B portal configuration, checkout customization through Shopify Functions, ERP and CRM integrations, and platform migrations from systems like Magento, WooCommerce, or BigCommerce. This differs from standard Shopify development primarily in scale and complexity, supporting multiple expansion stores, high transaction volumes, and operational requirements that standard Shopify plans aren’t built to handle.
AccelAsia is an official Shopify Partner, one of only 13 in Sri Lanka, providing Shopify Plus development services for brands both in Sri Lanka and internationally. This guide covers exactly what’s included in a Shopify Plus development engagement, how long each phase typically takes, and what current Shopify Plus features actually matter for a 2026 build.
What’s Included in Shopify Plus Development
A proper Shopify Plus development engagement covers several distinct technical scopes, not a single generic build.
Custom theme and storefront development, built for the specific scale and merchandising needs of an enterprise catalog, rather than a standard theme applied without modification.
Checkout customization through Shopify Functions, since Shopify’s own checkout extensibility framework now handles what used to require direct checkout.liquid access, using Checkout UI Extensions, the Checkout Branding API, and Shopify Functions for custom discount and shipping logic. This matters more than it used to, since Shopify Scripts were officially sunset on June 30, 2026, meaning any Plus store still relying on legacy Scripts based checkout customization needs this migrated to Functions as a priority, not an optional upgrade.
B2B portal and wholesale configuration, including company accounts, custom catalogs, and negotiated pricing logic. Worth noting for 2026 specifically, Shopify’s B2B functionality is no longer exclusive to Plus, so the development decision increasingly comes down to which other Plus specific capabilities, expansion stores, checkout depth, or transaction volume, actually justify the platform.
ERP, WMS, CRM, and PIM integrations, connecting a Shopify Plus store to the backend systems already running a business’s inventory, fulfillment, and customer data, rather than treating the storefront as an isolated system.
Multi store and international setup, using Shopify Plus’s included expansion stores, commonly up to nine, alongside Shopify Markets, which supports managing up to 50 international markets from a single store.
Automation through Shopify Flow, increasingly enhanced by Sidekick, Shopify’s AI assistant, which as of the Winter 2026 Edition can help build Flow automations from natural language instructions rather than requiring every workflow to be built manually.
Migration from another platform, most commonly from Magento, WooCommerce, or BigCommerce, covering full product, customer, and order data migration, URL mapping and redirects, and design system rebuild.
Shopify Plus vs Standard Shopify, What Actually Changes
The price jump from Advanced to Plus is substantial, which is exactly why the decision should come down to specific, needed capabilities rather than general appeal. The table below breaks down what actually changes beyond price.
| Factor | Standard Shopify (Advanced) | Shopify Plus |
|---|---|---|
| Monthly price | Around 399 USD | Starting around 2,300 USD |
| Expansion stores included | None | Up to 9 |
| B2B and wholesale | Available on Advanced as of 2026 | Deeper native B2B suite, unlimited catalogs |
| Checkout customization | Basic branding through Checkout Extensibility apps | Full Checkout Extensibility, custom Functions, Branding API |
| International markets | Limited | Up to 50 markets via Shopify Markets |
| API limits | Standard | Higher Plus specific limits |
| Support | Standard support | Priority support, dedicated launch resources |
What a Shopify Plus Migration Actually Involves
A Shopify Plus migration is not simply moving a product catalog from one platform to another. It requires a full technical audit of the existing store, mapping every current URL to its new destination with proper redirects to protect existing search rankings, migrating customer accounts and order history where the receiving platform supports it, rebuilding checkout logic that previously lived in custom code on the old platform, and validating the new store fully in a staging environment before anything goes live. Post launch monitoring matters just as much as the migration itself, watching indexing, rankings, and functional issues closely in the weeks immediately following go live, since this window is when most fixable problems actually surface.
A Realistic Shopify Plus Development Timeline
Project timelines vary significantly based on scope, but a typical Shopify Plus development or migration project follows a phase structure roughly like this, illustrative ranges to plan around rather than a fixed guarantee for every project.
| Phase | Typical Duration | What Happens |
|---|---|---|
| Foundation | Weeks 1 to 3 | Technical audit, checkout migrated to Functions and Checkout Extensibility, core Flow automations set up |
| Core build or migration | Weeks 4 to 10 | Theme development or full platform migration, B2B and catalog configuration, integrations connected |
| Optimization and expansion | Weeks 8 to 14 | Advanced Flow logic, custom Functions for discounts and shipping, expansion store and international market setup |
| Testing and launch | Weeks 12 to 16 | Full staging validation, redirect verification, go live |
| Post launch monitoring | Weeks 16 to 20 | Close monitoring of rankings, indexing, and functionality following launch |
Simpler builds without a full migration can land toward the shorter end of this range, while complex, multi region, multi integration projects commonly extend beyond 20 weeks.
Why Process Transparency Matters More Than Feature Lists
Most Shopify Plus development pages lead with certifications and feature lists, expertise claims that are hard for a buyer to actually evaluate before signing a contract. What matters just as much, and gets covered far less often, is what actually happens week to week and what a buyer should expect at each stage. AccelAsia treats this timeline and phase breakdown as something to walk through directly with a client before a project starts, not something left vague until after the contract is signed.
How AccelAsia Delivers Shopify Plus Development Services
AccelAsia is a certified Shopify Partner handling Shopify Plus development for brands in Sri Lanka and internationally, covering custom theme builds, B2B configuration, Checkout Extensibility and Functions development, ERP and CRM integration, and full platform migrations from Magento, WooCommerce, or BigCommerce. This development work sits alongside AccelAsia’s Marketing services, including PPC Ads across Google, Meta, and TikTok, SEO, and social media management, and AI Optimization, Answer Engine Optimization, and Generative Engine Optimization, all handled by one accountable team rather than coordinated across separate vendors. For more on evaluating a Shopify development partner, see our guide on why you should hire Shopify experts, and for a full breakdown of Shopify plan and Plus pricing, see our guide to Shopify pricing. You can see the full range of services on our services page.
Frequently Asked Questions
1. What is included in Shopify Plus development services?
- Shopify Plus development typically includes custom theme development, checkout customization through Shopify Functions and Checkout Extensibility, B2B portal configuration, ERP and CRM integrations, multi store and international setup, and platform migration from systems like Magento, WooCommerce, or BigCommerce.
2. How long does a Shopify Plus development project take?
- Timelines vary by scope, but a typical project runs roughly 12 to 20 weeks from initial audit through post launch monitoring, with simpler builds landing toward the shorter end and complex, multi region migrations extending beyond 20 weeks.
3. Do I need Shopify Plus for B2B functionality?
- Not necessarily. As of 2026, Shopify’s B2B functionality is available on the standard Advanced plan as well as Plus, so the decision to upgrade should be based on other Plus specific needs, such as expansion stores, deeper checkout customization, or higher transaction volume, rather than B2B access alone.
4. What happened to Shopify Scripts?
- Shopify officially sunset Shopify Scripts on June 30, 2026, in favor of Shopify Functions and the Checkout Extensibility framework. Any Shopify Plus store still relying on legacy Scripts based checkout customization needs this migrated as a priority.
5. What does a Shopify Plus migration include?
- A proper migration includes a full technical audit of the existing store, complete URL mapping with redirects, customer and order data migration, checkout logic rebuild, full staging validation before launch, and close post launch monitoring of rankings and functionality.
Final Thoughts
Shopify Plus development services cover considerably more than a single custom build, spanning checkout architecture, B2B configuration, integrations, and migration work that all carry real technical risk if handled without a clear process. Evaluating a development partner on actual timeline transparency and named technical scope, not just certifications and feature lists, tends to produce a far more reliable outcome.
Want a Shopify Plus development partner that walks through the real timeline and scope before you commit? AccelAsia is a certified Shopify Partner handling Shopify Plus development, migration, and marketing together for brands in Sri Lanka and internationally. Get in touch to get started.
