B2B E-commerce Platform Replatforming Guide 2026: APAC Buyer's Framework

Quick Answer: Choose your 2026 B2B platform by weighting eight criteria — contract pricing complexity, ERP integration, account hierarchy, multi-market support, three-year TCO, engineering burden, API roadmap and local support — then applying veto tests for unbuildable requirements, team capability and cost ceilings.

A manufacturer we worked with — a mid-market industrial brand selling through a dealer network across four APAC markets — had a website that worked fine for the 400 dealers who logged in weekly. The problem was the other 1,100. Those dealers ordered by emailing PDFs to a shared inbox in Hong Kong, where three people re-keyed the lines into an ERP. Nobody had ever calculated the cost of that arrangement. When they did, the number wasn't the salaries. It was the 6–9% of order lines that carried wrong pricing because a tier discount had been applied from a spreadsheet last updated two quarters earlier.

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That is the actual trigger for most replatforming projects, and it's why this B2B e-commerce platform replatforming guide 2026 starts with the commercial model rather than the technology. Nobody replatforms because their front end looks dated. They replatform because the pricing logic, the account hierarchy, or the cross-border tax handling has outgrown the system holding it — and because every month of delay compounds a reconciliation problem somewhere downstream.

Related reading: Shopify Plus vs Adobe Commerce B2B Asia: 2026 Verdict

This guide is written for the specific decision most APAC-headquartered B2B brands (and global brands using Asia as a regional operations hub) are facing right now: Shopify Plus, Adobe Commerce, or SHOPLINE. Different platforms, genuinely different cost curves, and a shortlist that behaves very differently once you cross a border.

Why 2026 is a concentrated replatforming window

Three things landed at once.

First, the demand side matured. Gartner has projected that 80% of B2B sales interactions between suppliers and buyers will occur in digital channels, and McKinsey's B2B Pulse research has consistently found that B2B buyers now use roughly ten channels across their decision journey — up from about five in 2016. Self-serve ordering is no longer a differentiator; it's a hygiene factor for retaining dealers who have retail-grade expectations.

Second, the supply side changed. Shopify launched its native B2B feature set for Plus merchants (companies, locations, catalogs, payment terms) and has been shipping against it steadily since 2023, which removed the main historical reason B2B brands ruled Shopify out. Adobe, meanwhile, ended support for Magento Open Source and Adobe Commerce 2.4.6 in 2025 and continues its rolling support-lifecycle cadence — documented on Adobe's own Commerce lifecycle policy page — which forces a decision on every merchant sitting on an ageing 2.4.x build.

Third, the regional picture shifted. Statista puts global B2B e-commerce transaction value in the multiple-trillions of USD, with Asia-Pacific the largest contributor by volume — driven by China, but with rapid growth across Southeast Asia. Google, Temasek and Bain's e-Conomy SEA report has tracked Southeast Asia's digital economy toward roughly US$300 billion in GMV by 2025, and the B2B tail behind that consumer growth is where most of the unbuilt systems are.

If you're a UK or US brand considering Asia as an operations hub, that last point matters more than it sounds. The platform decision you make in London determines whether your Singapore or Hong Kong entity can transact in six currencies with local payment rails, or whether it becomes a cost centre that manually invoices everything.

Evaluation criteria that actually separate B2B platforms

Most comparison articles score platforms on features that all three have. These are the criteria where the three genuinely diverge.

1. Account hierarchy depth

Can the platform model a parent company with multiple buying locations, each with its own price list, credit limit, approval chain, and shipping address book? Shopify Plus does this natively through its company/location object model. Adobe Commerce does it through Company Accounts and shared catalogs, with more granular role permissions out of the box. SHOPLINE's B2B capability is strongest where the hierarchy is flatter — distributor and reseller tiers rather than four-level enterprise procurement trees.

Ask the vendor to model your worst account. Not a demo account. The one with 40 branches and three different payment terms.

2. Price list logic and contract pricing

This is where implementations die. Contract pricing in B2B is rarely a percentage discount. It's negotiated per-SKU pricing, volume breaks, currency-specific lists, and time-bound promotional overrides — often all four on the same line item.

Shopify Plus handles per-company catalogs with fixed prices or percentage adjustments; complex volume-break matrices usually need Shopify Functions or an app. Adobe Commerce's tier pricing and shared catalog model handles this natively and is the strongest of the three for genuinely complex contract structures. SHOPLINE sits between the two, with member-tier and wholesale pricing that covers most distributor scenarios without custom code.

3. ERP integration reality

Every platform claims ERP integration. What matters is the direction and frequency of the sync you actually need: real-time inventory and credit-limit checks are a different engineering problem from nightly product and price pushes.

A practical test: ask what happens when a dealer places a HK$180,000 order and their credit limit has HK$120,000 remaining. Does the platform block at checkout, accept and flag, or accept blindly and let finance discover it? All three behaviours are defensible. Only one matches your finance policy.

4. Multi-market and multi-currency architecture

One store with market-specific pricing, or separate stores per market? Shopify Markets lets you run one store with per-market pricing, domains and currencies. Adobe Commerce's website/store/store-view hierarchy gives more structural control but more maintenance surface. SHOPLINE was built regionally — its native strength is HK, Taiwan, mainland China, Singapore and Malaysia operations, with local payment methods and logistics integrations that Western platforms treat as app-store add-ons.

5. Payment terms and settlement

B2B means net terms, purchase orders, partial payments and offline settlement. Confirm which are native and which require a third party. Shopify Plus supports net payment terms natively for B2B companies. Adobe Commerce supports purchase order and offline payment methods natively. Local rails — FPS in Hong Kong, PayNow in Singapore, LINE Pay in Taiwan, DuitNow in Malaysia — are where SHOPLINE's regional integration depth shows.

6. Total engineering surface you own

This is the criterion buyers underweight. SaaS means the vendor patches your platform. Self-managed or cloud-hosted Adobe Commerce means you own security patching, PHP version upgrades, and extension compatibility for the life of the system. Adobe publishes security patch bulletins on a regular cadence; each one is an engineering ticket somebody has to own.

7. Headless and composable readiness

If your roadmap involves a customer portal, a field-sales app, or PIM-driven catalog syndication, check API rate limits and whether the storefront can be decoupled. Shopify's Storefront API and Hydrogen framework are mature; Adobe has GraphQL and its API Mesh; SHOPLINE offers an OpenAPI set that is functional but less broadly documented in English.

8. Local operational support

When your Vietnam launch breaks at 11pm ICT, who answers? Vendor support tiers, partner density in your markets, and language coverage are real evaluation criteria, not soft ones.

Total cost of ownership: the numbers, honestly

List price is the smallest line in a B2B replatform. Here's how the three actually cost out over a three-year horizon.

Shopify Plus

Shopify publishes Plus pricing at US$2,300 per month on a three-year term, or US$2,500 per month on a one-year term, according to Shopify's own plans page. Above roughly US$800,000 in monthly platform sales, Plus moves to a variable fee model based on a percentage of sales — which is the number most fast-growing B2B merchants should model carefully, because B2B AOVs are high and volume tips the threshold faster than consumer brands expect.

Add to that: transaction fees if you don't use Shopify Payments (2% on many plans, though B2B orders on net terms settle differently), app subscriptions (a realistic B2B stack of ERP connector, tax engine, advanced pricing, and quote management commonly runs US$500–$2,500/month combined), and implementation.

Implementation for a mid-market B2B Plus build with ERP integration and a dealer portal typically lands in the US$60,000–$250,000 range in APAC, depending on how much of the pricing logic needs custom Shopify Functions.

Adobe Commerce

Adobe does not publish list pricing. Partner and analyst-published estimates consistently place annual licensing in the US$22,000 to US$125,000+ range, tiered by gross merchandise value, with Adobe Commerce on Cloud (which bundles infrastructure) sitting at the upper end. Treat any single figure you read as indicative; Adobe negotiates by account.

What isn't optional is the surrounding cost. Adobe Commerce implementations for B2B are commonly quoted at US$150,000 to US$800,000+, and ongoing maintenance — patching, upgrades, extension compatibility, DevOps — realistically consumes an annualised retainer that is often 15–25% of initial build cost. If you're running Commerce on your own infrastructure rather than Adobe's cloud, add hosting, CDN and monitoring.

The honest trade-off: Adobe Commerce is the most expensive of the three and the most capable at complex B2B commercial logic. If your pricing model genuinely requires it, the licence is not where you'll feel the cost — the engineering headcount is.

SHOPLINE

SHOPLINE publishes SMB plan tiers in local currency across Hong Kong, Taiwan, Singapore and Malaysia, and quotes enterprise and B2B tiers case by case, so a single global number would be misleading. Structurally, it sits closer to Shopify Plus than to Adobe Commerce on both licence and implementation cost, with the meaningful difference being regional integration work you don't pay for — local payment gateways, HK/TW logistics providers, and Traditional Chinese admin UX are in the box rather than in a proposal.

The counterweight: a smaller global partner and developer pool, and less depth if your roadmap runs toward headless or heavy composable architecture.

The costs nobody puts in the business case

• Data migration. Product, customer, company hierarchy, order history, contract pricing. Historical order data is usually the line item that blows out — B2B buyers reorder from history, so "we'll skip order history" is rarely acceptable.
• SEO and URL continuity. For B2B brands with technical content ranking, a botched redirect map is a revenue event.
• Dual-running. Most replatforms run old and new in parallel for 1–3 months. You pay for both.
• Internal time. Finance, sales ops and customer service time spent on UAT and dealer onboarding. It's real cost even though it never appears on an invoice.
• Dealer retraining. If 1,500 dealers need to learn a new ordering flow, adoption support is a project, not an email.

A weighted scoring framework you can run in a week

Generic feature checklists produce ties. Weight the criteria against your business and the answer usually falls out.

Step 1: Set your weights

Assign 100 points across eight criteria. A typical distribution for a dealer-network manufacturer:

• Contract pricing complexity — 20
• ERP/inventory integration — 18
• Account hierarchy — 15
• Multi-market/currency — 12
• Total cost of ownership over 3 years — 12
• Engineering burden you own — 10
• Headless/API roadmap — 8
• Local support and partner density — 5

A brand selling one catalogue into six APAC markets with simple tier pricing would invert several of these — multi-market to 20, contract pricing to 8.

Step 2: Score each platform 1–5 against your actual requirements

Not against the feature list. Against the three or four scenarios you wrote down in the criteria section — the worst account, the credit-limit case, the volume-break matrix.

Step 3: Multiply and compare, then apply the veto test

Before accepting the winner, run three vetoes:

• Veto 1 — the unbuildable requirement. Is there any requirement the top-scoring platform cannot meet without custom code you'd have to maintain forever? If yes, re-score.
• Veto 2 — the team you have. Adobe Commerce with no in-house PHP capability and no long-term partner retainer is a known failure pattern. Score the platform you can operate, not the one you can buy.
• Veto 3 — the 3-year cost ceiling. If the variable-fee model or the licence tier puts year-three cost above your ceiling at forecast volume, the decision is already made.

Typical outcomes

From the shortlists we see across Greater China, Singapore and Australia:

• Shopify Plus wins when the commercial model is moderately complex, the team is small, speed matters, and the roadmap includes DTC alongside B2B on one stack.
• Adobe Commerce wins when contract pricing is genuinely non-standard, ERP integration is bidirectional and real-time, and there's budget for a permanent engineering relationship.
• SHOPLINE wins when the operating centre of gravity is Greater China plus Southeast Asia, local payments and logistics matter more than headless architecture, and the team works primarily in Chinese.

Migration mechanics: what the work looks like

The commercial decision is one thing; the build is another. A few concrete examples of what B2B configuration actually involves.

On Shopify Plus, company and catalog objects are managed through the Admin GraphQL API. Creating a company with a location and attaching a price list looks roughly like this:

1mutation CreateCompany {
2  companyCreate(input: {
3    company: { name: "Northern Distribution Pte Ltd", externalId: "ERP-4471" }
4    companyLocation: {
5      name: "Singapore HQ"
6      billingAddress: { countryCode: SG, city: "Singapore", zip: "048583" }
7      buyerExperienceConfiguration: {
8        paymentTermsTemplateId: "gid://shopify/PaymentTermsTemplate/4"
9        checkoutToDraft: false
10      }
11    }
12  }) {
13    company { id name }
14    userErrors { field message }
15  }
16}

The externalId field is what keeps your ERP the system of record. Getting that mapping right on day one prevents the duplicate-account problem that surfaces six months in.

On Adobe Commerce, shared catalogs and company data are managed via CLI and the REST/GraphQL APIs. A typical migration sequence includes:

1# Reindex after bulk company and shared-catalog import
2bin/magento indexer:reindex catalog_product_price customer_grid
3
4# Verify B2B modules are enabled before UAT
5bin/magento module:status | grep -i "Magento_Company\|Magento_SharedCatalog\|Magento_NegotiableQuote"
6
7# Flush and warm cache before dealer cutover
8bin/magento cache:flush && bin/magento cache:enable

If catalog_product_price reindexing on your full SKU count takes longer than your maintenance window, you've found a scaling constraint before launch rather than after — which is the point of running it in staging with production-volume data.

SHOPLINE's OpenAPI follows a conventional REST pattern for order and product sync:

1curl -X GET "https://open.shopline.io/v1/orders?updated_at_min=2026-01-01T00:00:00Z" \
2  -H "Authorization: Bearer $SHOPLINE_TOKEN" \
3  -H "Content-Type: application/json"

Whichever platform you choose, insist on a full-volume data rehearsal — real SKU counts, real customer counts, real order history — before you commit to a cutover date. Rehearsals on 5% samples hide every performance problem worth knowing about.

Cross-border realities APAC buyers hit and Western buyers miss

Tax and invoicing. Singapore GST, Malaysia's SST, Taiwan's GUI e-invoicing requirements, Australia's GST and the ATO's e-invoicing push via Peppol — each has different compliance mechanics. Confirm whether the platform handles it, a tax engine handles it, or your ERP handles it. "The accountant handles it" is not an architecture.

Payment rails. Card penetration varies enormously across the region. B2B settlement in Hong Kong often runs through FPS or bank transfer, not cards. If your platform assumes card-first checkout, you'll build a workaround.

Language. Traditional Chinese for HK and Taiwan, Simplified for the mainland, plus Bahasa, Vietnamese and Thai. Check that the platform supports separate content per locale rather than machine translation over a single content model — B2B product specs don't tolerate translation drift.

Logistics. Regional 3PL and last-mile integrations differ market by market. SF Express in Greater China behaves nothing like an Australia Post integration.

One pattern worth naming: several global brands are now running their APAC B2B channel on a different platform from their home-market DTC stack, connected through a shared PIM and ERP. It's not architecturally elegant, but it lets the regional entity move at its own speed with local payment and logistics depth. If you search B2B ecommerce platforms on Reddit you'll find plenty of people arguing that one-stack purity is worth defending — in practice, the maintenance cost of a second regional storefront is often lower than the cost of forcing local requirements into a global template.

Common failure modes

• Choosing on demo quality. Every platform demos well. Demos are built on the happy path.
• Underestimating the pricing data. Contract pricing usually lives in the ERP, in spreadsheets, and in sales reps' heads simultaneously. Reconciling it is a project of its own — and often the single most valuable output of the whole replatform.
• Migrating everything. Twenty years of order history and 40,000 discontinued SKUs don't need to move. Define what's archived versus migrated early.
• No dealer adoption plan. A platform nobody logs into is an expensive brochure.
• Big-bang cutover across all markets. Pilot in one market with a subset of accounts. Fix what breaks. Then roll.

A realistic timeline for a mid-market B2B replatform with ERP integration and 2–3 markets: 4–7 months from kickoff to first-market launch, with subsequent markets at 4–8 weeks each. Anyone quoting six weeks for the whole programme is quoting a theme swap.

How to evaluate: your next 30 days

Run this sequence rather than starting with vendor calls.

Week 1 — Document the commercial model. Write down every pricing rule, approval chain, credit arrangement and payment term that actually exists. Include the exceptions. This document is the single most useful artefact in the entire project and it doesn't require a vendor.

Week 2 — Build the weighted scorecard. Assign your 100 points. Get the finance lead, the sales ops lead and the head of IT to sign off on the weights before anyone sees a demo. Weights agreed after a demo are just rationalisation.

Week 3 — Run scenario-based vendor sessions. Give each vendor and partner your three hardest scenarios in writing 48 hours ahead. Ask them to configure, not present. Note what they need custom code for.

Week 4 — Model three-year TCO at forecast volume. Licence, variable fees, apps, implementation, maintenance retainer, internal time, dual-running. Then model it again at 2x your forecast, because the variable-fee thresholds are where surprises live.

Apply the three vetoes. Choose. Then pilot in one market.

Where this is heading: the interesting shift over the next two years isn't which platform wins, it's that the storefront is becoming the least differentiated layer. Agentic buying — procurement systems and AI assistants placing orders through APIs rather than humans clicking through catalogues — puts the pressure on your product data quality, your pricing API, and your inventory accuracy. Platforms that expose clean, fast, well-documented commerce APIs will absorb that traffic. Platforms that only render HTML well will not.

Which means the most durable thing you can do in a 2026 replatform is get your product, pricing and account data into a structure you'd be comfortable exposing to a machine. Everything above the API is replaceable. That layer isn't.

If you're scoping a B2B replatform across APAC markets and want a second read on the shortlist — or a TCO model built against your actual volumes — Branch8 works with brands running Shopify Plus, Adobe Commerce and SHOPLINE across Hong Kong, Singapore, Taiwan and Australia. Send us the commercial model document from week one; that's the conversation worth having.

Sources

• Shopify — Plans and pricing
• Shopify — B2B on Shopify documentation
• Adobe — Commerce software lifecycle policy
• Adobe — Commerce B2B developer documentation
• SHOPLINE — Official site and plans
• McKinsey & Company — B2B Pulse research
• Gartner — Future of B2B sales insights
• Google, Temasek & Bain — e-Conomy SEA report
• Statista — B2B e-commerce market data