Most replatforming advice is written for a business with one sales channel and one type of customer. FMCG manufacturers rarely have that luxury. A UK FMCG brand replatforming its ecommerce operation is usually managing a direct-to-consumer ambition, a set of major retailer accounts, EDI integrations that cannot go down, and a promotional calendar that doesn't pause for a migration. The general decision framework for whether you should replatform your ecommerce site still applies — but it misses the things that make FMCG replatforming genuinely different, and more commercially dangerous if got wrong.

This article covers what's specific to FMCG. For the underlying decision framework — when replatforming is actually justified, the honest cost picture, and the questions to ask before you sign with an agency — that detail lives in our main ecommerce replatforming guide. Read this one first if you're an FMCG manufacturer or retailer; it tells you which parts of the general framework matter most for your situation, and what to add to it.

Why ecommerce replatforming is not the same for FMCG brands

Three things make FMCG replatforming structurally different from a typical B2C or single-channel migration.

The first is channel conflict. Most FMCG replatform conversations don't start from a DTC ambition — they start from a retailer relationship problem. A major grocery account demands a new EDI standard, an Amazon 1P or 3P arrangement needs better stock synchronisation, or a wholesale distributor relationship is straining under manual order processing. The platform decision gets made to solve that problem, and the DTC implications get bolted on afterwards. This produces a familiar pattern: a platform chosen for trade and EDI compatibility that then makes DTC look like an afterthought, or a platform chosen for a slick DTC storefront that creates a six-month integration problem with the retailers who actually generate most of the revenue.

The second is EDI and trade compliance. Most generic ecommerce platforms are not built with EDI as a first-class concern. Adding it later, after a platform has already been selected for other reasons, is one of the most expensive and time-consuming workstreams in any FMCG replatform project — comparable in complexity to the ERP integration risk we map in detail in the Right Partners Replatform Impact Model™. If your retailer accounts depend on a specific EDI standard, that requirement needs to shape the platform shortlist from day one, not get retrofitted once a decision has already been made.

The third is the promotional and seasonal calendar. FMCG sales activity is rarely smooth. Promotional cycles, seasonal peaks, and retailer-driven promotional commitments create windows where a platform migration is genuinely too risky to attempt, and windows where it's the only sensible time to do it. A generic replatforming timeline that ignores this calendar is one of the most common causes of an FMCG migration going live at exactly the wrong moment.

The DTC and trade channel conflict question, before you touch a platform

The single most consequential question in an FMCG replatform is this: which channel is this platform decision actually being made for, and what does that mean for the channel it isn't being made for?

A platform optimised for a DTC subscription or direct-to-consumer experience often handles B2B account pricing, credit terms, and bulk ordering poorly without significant customisation. A platform optimised for trade and wholesale operations often produces a DTC storefront that feels generic and underpowered compared to FMCG-specific DTC competitors. Very few platforms do both well without meaningful investment in one direction or the other.

This is not a reason to avoid replatforming. It is a reason to be explicit, before any platform conversation begins, about which channel the business is actually optimising for over the next two to three years, and to accept that the other channel will need deliberate compensating investment rather than assuming the platform will handle it adequately by default. This is exactly the kind of question that belongs in an FMCG-specific ecommerce strategy conversation before it becomes a platform requirements document.

What to check before replatforming — FMCG-specific

Beyond the general due diligence covered in our main replatforming guide, FMCG manufacturers and retailers should specifically check the following before committing to a platform decision.

EDI and retailer integration carryover. Which of your current EDI connections and retailer-specific integrations will carry over to a new platform without rebuild, and which will require redevelopment from scratch. This is rarely a simple yes or no answer per retailer.

Promotional calendar timing. When in your trading year a migration is genuinely safe to attempt, accounting for major promotional periods, seasonal peaks, and any committed retailer promotional activity that cannot be disrupted.

Multi-channel inventory synchronisation. Whether stock visibility across DTC, wholesale, and major retailer channels will remain accurate and real-time on the new platform, or whether this introduces a new reconciliation problem.

Trade pricing and account-specific terms. Whether the new platform can natively support the pricing complexity of your retailer and wholesale accounts, or whether this becomes a significant custom development requirement.

The general replatforming decision framework still applies

None of the above replaces the underlying discipline of a good replatforming decision. The same questions still matter: whether the problem you're trying to solve is actually a platform problem or a data, integration, or governance problem; what the honest, fully-loaded cost of migration looks like once ERP and EDI integration are properly scoped; and what to ask any agency or platform vendor before you commit.

Our main guide covers five signs you probably do need to replatform, and five signs you probably do not, along with the honest cost picture for UK mid-market ecommerce replatforming that most agencies won't volunteer. If you haven't read that yet, read it alongside this one — the FMCG-specific factors above should sit on top of that framework, not replace it.

Frequently Asked Questions

Does replatforming break our EDI integration with retailers?

It depends entirely on the platform and the specific EDI standard each retailer requires. Some platforms support EDI natively or through well-established connectors; others require significant custom development to replicate what you currently have. This should be scoped and confirmed retailer-by-retailer before a platform is selected, not assumed to be straightforward because a vendor says their platform "supports EDI."

Should we replatform before or after launching a DTC channel?

There's no universal answer, but the question itself is the wrong frame. The better question is whether your current platform can support both your existing trade relationships and a credible DTC launch without compromising either. If the honest answer is no, the platform decision and the DTC launch decision are linked, and should be planned together rather than sequenced as two separate projects.

How long does an FMCG ecommerce replatform typically take?

Longer than the initial estimate, in almost every case we've seen, because EDI and retailer integration work is consistently underestimated. A realistic FMCG replatform — including EDI carryover, trade pricing reconfiguration, and a DTC storefront — typically takes six to twelve months from platform selection to full go-live, depending on the number of retailer integrations involved.

Can one platform handle both our DTC and trade channels well?

Some can, with the right configuration and investment, but very few do both well by default. The realistic expectation is that one channel will be the platform's primary strength and the other will need deliberate compensating investment — additional development, a complementary tool, or a phased approach. Going in assuming both channels will be equally well served from day one is one of the most common sources of post-launch disappointment.

What's the biggest risk specific to FMCG replatforming?

Channel conflict driven by an unstated assumption. Most FMCG replatform projects are commissioned to solve a problem in one channel — usually a retailer or EDI issue — without an explicit decision about what happens to the other channel as a result. The platform gets selected, the migration happens, and six months later it becomes clear that DTC or trade was never properly considered in the original brief.

Further reading

Should You Replatform Your Ecommerce Site? A Vendor-Neutral Decision Framework · FMCG Ecommerce Strategy for UK Manufacturers & Retailers · B2B Ecommerce for UK Manufacturers: The Commercial Opportunity · The Ecommerce Capability Gap in UK Manufacturing

If you're weighing a replatform decision against a DTC or trade channel question, talk to Right Partners. No platform agenda, no agency bias — an honest assessment of what your specific channel mix actually needs.