🛒 E-commerce in 2026: Organic SEO, Paid or Marketplaces — Where Should You Invest?

On 22 July 2026, Google activated AI Overviews and AI Mode in France, two years after their US launch. The delay stems from a dispute over neighbouring rights: €500 million in fines in 2021, €250 million in 2024. For every e-commerce business in 2026, the results page your customers see no longer displays the same links as before the summer.

Where the tool has been running for two years, publishers report organic traffic drops of 20 to 40%. France does not yet have a confirmed figure, but the question is no longer whether SEO is changing: it is about how quickly Paid and marketplaces need to take over. This guide compares the three channels using available data and offers a decision framework based on your maturity level.

Key takeaways

• AI Overviews and AI Mode have been active in France since 22 July 2026: aim to be cited in a generated response, not just to rank a link.
• Agentic commerce remains marginal: less than 1% of e-commerce activity and, separately, less than 1% of product listings visible to AI.
• Retail media amounts to €1.46 billion in France in 2025 (+9.2%, according to WPP Media).
• Regulation has a measurable effect on Shein and Temu: according to the French Treasury, European imports fell by 30 to 40%, and Shein’s audience in France dropped sharply in July 2026 according to data reported by AFP.
• The ideal split between SEO, Paid and marketplaces depends first on your maturity level, not on a universal formula.

🚀 The E-commerce Landscape in 2026: Technological Disruptions and New Rules of the Game

Three forces are reshaping acquisition this year: engines that respond without a click, an increasing number of automated payment protocols, and social networks that have become storefronts.

🤖 The Unstoppable Rise of Agentic Commerce and Predictive AI

Definition: agentic commerceA purchase made or triggered by an AI agent (conversational assistant, shopping copilot) on behalf of a consumer, without manual navigation on the merchant’s site.

Agentic commerce is generating buzz, but its 2026 figures remain modest. According to Investing.com, it accounts for less than 1% of global e-commerce activity. A separate figure: according to L’Usine Digitale citing Mirakl, fewer than 1% of product listings are visible and usable by AI.

The most telling example comes from OpenAI. Instant Checkout, launched in September 2025, was pulled from ChatGPT as early as March 2026 and replaced by simple redirect links to the retailer. Google, meanwhile, is advancing with two distinct and complementary protocols, alongside two standards for exchange between agents and systems:

1. AP2 (Agent Payments Protocol), since September 2025, secures payments initiated by an AI agent.
2. UCP (Universal Commerce Protocol), since January 2026 with Walmart and Carrefour, enables native checkout within AI Mode and Gemini.
3. A2A (Agent2Agent), communication between AI agents from different providers.
4. MCP (Model Context Protocol), exchange of context between an AI and a merchant’s systems.

To be eligible for UCP, a merchant must structure its product feeds avec l’attribut native_commerce dans Google Merchant Center. C’est une extension des bonnes pratiques SEO déjà connues, pas un chantier à part.

Note: payment networks remain cautious. Mastercard has expressed serious reservations about authorisation and liability risks in the event of an AI agent error.

💬 Social Selling and Conversational Commerce (TikTok Shop, WhatsApp)

TikTok Shop opened in France on 31 March 2025, and its six-month review, presented on 14 October 2025, confirmed the channel’s place in French retail. In the United States, TikTok Shop was not banned: a structure with a majority of American investors was put in place at the end of 2025.

Côté Meta, “Meta Business Agent” has been available across WhatsApp, Messenger and Instagram since June 2026. The AI responds to customers and automates part of the sales process, free to start. It complements the existing WhatsApp Business catalogue.

Doko’s view: we see these disruptions as warning signals, not as a reason to tear everything up. Clean data, structured listings, active social presence: these fundamentals remain the best preparation, whatever protocol ends up prevailing.

🔍 Channel 1: Organic SEO in 2026 — Durability in the Face of AI-Generated SERPs

SEO has not disappeared — it has changed its face. The battle is no longer fought solely on link rankings, but on the ability to be cited in an AI-generated response.

🧠 Adapting to the Search Generative Experience (SGE) and Conversational Engines

What was called SGE (Search Generative Experience) is now called AI Overviews and AI Mode. Google dropped the term, not the idea: responses generated directly within results, before the list of classic links.

In France, these features have been active since 22 July 2026, two years after their US launch. The delay stems from the neighbouring rights dispute already mentioned (fines in 2021 and 2024). Before its rollout in France, the tool was already operating in 120 countries and 11 languages.

Note: the subject remains legally contested. French press publishers lodged a complaint with the Autorité de la concurrence following the launch.

In markets where AI Overviews has been active longer, publishers report organic traffic drops of 20 to 40%. This figure is not confirmed for France. We treat it as a working scenario, not a forecast.

What protects best is well-executed SEO: structured data, complete product listings, content that directly answers the question being asked. This is also the gateway to agentic commerce, since UCP requires the same product data feeds via Google Merchant Center.

🎯 Ultra-Personalised Content and Experience Marketing as Conversion Levers

Generic content converts less well than content addressed to a specific segment. This means product recommendations based on browsing behaviour, category pages adapted to the traffic source, and editorial content that addresses an intent.

Le marketing d’expérience (essais virtuels, configurateurs, vidéo produit) réduit l’incertitude au moment de l’achat, un facteur de conversion souvent plus déterminant que le prix. Concentrez l’effort sur les pages à fort trafic et low conversion rates.

Doko’s view: we believe that structuring your product data pays twice: visibility in AI Overviews today, eligibility for agentic commerce tomorrow.

📊 Channel 2: Paid Advertising (Paid Media) — Between Rising Costs and Creative Diversity

The upward pressure on bids is widely reported by industry players, without a publicly agreed figure. What can be measured, however, is the rise of a new pillar: retail media.

📱 Mastering the Multi-Platform Advertising Mix (Meta, TikTok, Retail Media)

Retail media is establishing itself as the third pillar of digital advertising, alongside search and social. According to eMarketer, global investments exceeded $140 billion in 2024, with growth above 20% per year, heading towards $165 billion projected for 2026.

In the United States, the channel already captures approximately 20% of digital investment, with 84% on Amazon and Walmart. In Europe, IAB Europe projects €25 billion by 2026. In France, it reached €1.46 billion in 2025 (+9.2%, WPP Media), with +8.6% projected for 2026.

Better to start from the real customer journey. Meta and TikTok capture attention at the top of the funnel, retail media converts at the product listing level, at the point of decision.

🎨 The Impact of Generative AI on Creative Production and A/B Testing

No reliable quantitative data precisely measures the performance gain of generative AI on creatives. The qualitative trend, however, is clear: generating visual and text variants has become democratised, and more angles are tested without multiplying the production budget.

In practice, this mainly changes the iteration speed: an A/B test that used to take several weeks can now launch in a few days. But a creative without a genuine value proposition will not convert better just because it was produced faster.

Doko’s view: we treat retail media as a channel in its own right, not as a secondary end-of-month budget. Its sustained growth in France makes it one of the best alternatives when SEO slows down.

📦 Channel 3: Marketplaces — Between Dependency and Hyper-Growth Opportunity

Not all marketplaces are equal in 2026: some remain solid growth drivers, while others are facing regulatory pressure that is changing their model.

🌍 Should You Still Bet on Amazon, Cdiscount or the Ultra-Low-Cost Giants (Shein, Temu)?

Amazon remains dominant, driven by its integrated advertising platform (plus de 68 milliards de dollars de revenus en 2025). Cdiscount fait partie des six fondateurs des “French Days” (avec Boulanger, Fnac Darty, La Redoute, Rue du Commerce et Showroomprivé), opération lancée en 2018.

For the ultra-low-cost giants, it is a different story. Two regulatory measures have changed things this year: a French tax of €2 per item on small parcels from third countries since 1 March 2026, then European customs duties of €3 per product category since 1 July 2026.

The effects are already measurable. According to the French Treasury, European imports have fallen by 30 to 40%. According to audience data reported by AFP, Shein’s traffic in France is said to have dropped by 42.3% in July 2026 — a figure we were unable to corroborate with a primary source. Shein even launched its IPO in Hong Kong at a reduced valuation — targeting up to $27 billion compared to $100 billion in 2022 — with its share down 10% on its first day of trading according to Boursorama.

Note: the subject remains politically active, between lobbying and possible adjustments to the legislation. Impact figures are evolving rapidly: verify them before making any allocation decisions.

⚖️ Managing Margin and Own-Brand Cannibalisation

Selling on a marketplace solves one problem — acquisition — and creates another: margin. Between commissions, logistics costs and price pressure, net profitability is structurally lower than on a proprietary site.

The most costly risk, however, is silent cannibalisation. A customer who would have bought from your site at full price buys on Amazon with a coupon. It is better to reserve certain products for the proprietary site and treat the marketplace as a discovery channel rather than an exclusive sales channel.

Doko’s view: we rarely recommend abandoning a generalist marketplace such as Amazon. However, we do alert our clients to excessive dependence on a channel whose rules and prices they do not control.

🧭 2026 Investment Strategy: How to Allocate Your Budget Based on Your Maturity Level?

Before allocating a budget, let us compare the three channels side by side.

What follows is an agency benchmark, not a quantified industry standard: budget allocation adjusts according to your sector, your margin and your history.

🌱 The Ideal Mix for an E-commerce Business in the Launch Phase

At launch, the priority is learning speed, not budget economy. Paid and marketplaces generate traffic and first sales while SEO, which is slower, is built in parallel. They also reveal which products and messages convert.

A brand that is starting out therefore benefits from dedicating a significant share of its budget to Paid and marketplaces, while laying from day one the SEO foundations that will reduce its advertising dependence twelve to eighteen months later.

📈 Resource Allocation for an Established Brand Looking to Scale

An established brand seeks the opposite effect: making the existing acquisition profitable. Consolidated SEO becomes the most profitable channel at the margin, its marginal acquisition cost tending towards zero on already-ranked keywords. The Paid budget is redeployed towards retail media and social selling, and marketplaces become a diversification channel.

Three questions allow this allocation decision to be grounded:

1. What is my current acquisition cost per channel? Without this data, no allocation decision is reliable.
2. What share of my organic traffic depends on queries now captured by AI Overviews? The most direct warning signal for 2026.
3. What margin do I have left after marketplace commissions? A channel that generates volume without margin is not profitable — it is a cash-flow channel.

The Doko team supports e-commerce businesses in this allocation process, with a cross-channel SEO, Paid and marketplace audit that identifies where each euro delivers the most. Contact us for a free audit of your e-commerce acquisition strategy.

Doko’s view: our stance is simple: never choose a channel out of dogma. The right mix for an e-commerce business in 2026 e-commerce business in 2026 is built from your own figures, not from a standard split.

❓ FAQ: Your Questions About E-commerce in 2026

💰 Which Are the Most Profitable Channels?

No study provides a reliable comparative ROI by channel in 2026. Retail media shows the most sustained growth (+20% per year globally, +8.6% projected in France), but profitability depends primarily on your margin and your maturity level.

🔮 What Is Agentic Commerce and What Is Its Impact?

These are purchases triggered by an AI agent on behalf of a consumer, via protocols such as AP2 or UCP. Their impact remains marginal: less than 1% of e-commerce activity and, separately, less than 1% of product listings visible to AI.

🏬 Should You Abandon Marketplaces?

No, but distinguish between the generalists and the ultra-low-cost giants. Amazon remains dominant. Shein and Temu are facing regulatory pressure whose effects are beginning to be measurable (European imports down 30 to 40% according to the French Treasury, Shein’s audience significantly down according to data reported by AFP).

🛡️ How Is SEO Holding Up Against AI (AI Overviews/AI Mode)?

By structuring product data and aiming to be cited in AI Overviews rather than just seeking the click. Active in France since 22 July 2026, these tools are accompanied, elsewhere, by editorial traffic drops of 20 to 40%.

💸 How to Allocate Your Budget Between SEO, SEA and Social?

There is no standardised official split: ours remains an agency heuristic, to be adjusted according to your sector. At launch, Paid and marketplaces fund the learning phase. Once the brand is established, the budget is redeployed towards SEO and retail media.

Doko’s Doko : we prefer a frank answer to a fragile figure. When data is lacking, we say so to our clients and test on their own campaigns.

📚 Sources

Source: https://www.abondance.com/20260722-2640402-lancement-officielle-ai-overviews-france.html

Source: https://www.abondance.com/20260304-1975985-google-en-dit-plus-sur-universal-commerce-protocol-ucp-sa-nouvelle-norme-pour-un-ecommerce-agentique.html

Source: https://www.e-marketing.fr/retail-1095/strategie-retail-2203/top-5-des-plateformes-de-retail-media-en-2026-171520

Source: https://www.lefigaro.fr/conjoncture/shein-temu-la-taxe-sur-les-petits-colis-a-fait-chuter-les-importations-en-europe-de-30-a-40-note-bercy-20260827

Source: https://fr.euronews.com/2026/08/24/shein-lance-son-ipo-a-une-valeur-fortement-reduite-leurope-au-coeur-de-sa-strategie