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How influential is AI in shopping decisions?
Among people who already use AI while shopping, it has become one of the most influential sources in the decision process. In a 2025 IAB and Talk Shoppe study, AI ranked second only to conventional search and ahead of retailer websites, apps, friends and family. 46 per cent used it during most or every shopping journey, and almost 90 per cent said it helped them discover products they might not otherwise have encountered.
What this means for brands
AI is becoming a new layer of discovery and consideration. Brands need information that AI systems can accurately understand, compare and support with evidence.
Source and scope
IAB, When AI Guides the Shopping Journey, 2025. The research included more than 450 observed shopping sessions involving AI and a survey of 600 US AI shoppers aged 18–64.
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Does AI make the purchase journey shorter?
AI can make individual tasks faster while expanding the overall decision journey. In the IAB study, 95 per cent of participants took at least one additional action after consulting AI. The average number of shopping steps increased from 1.6 before the AI interaction to 3.8 afterwards, while visits to retailer and marketplace websites almost tripled.
What this means for brands
AI creates an additional discovery and validation layer rather than simply replacing search or the website. Claims, comparisons and information on landing pages must remain consistent across the complete journey.
Source and scope
IAB and Talk Shoppe research report, 2025.
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What makes an AI shopping recommendation trustworthy?
People trust AI shopping recommendations when they can inspect the source, verify the evidence and understand why an option was recommended. Only 46 per cent of participants in the IAB study said they fully trusted AI recommendations, while 89 per cent verified them independently. Source transparency, verified reviews and explanations were the strongest reported trust signals.
What this means for brands
AI visibility without verifiable evidence is fragile. Reliable product facts, independent recognition, reviews, case studies and clear policies create the evidence architecture behind a recommendation.
Source and scope
IAB, When AI Guides the Shopping Journey, 2025.
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How widely is AI already used across the buying journey?
AI is already influencing product research, review interpretation and deal discovery while physical retail remains highly relevant. An IBM Institute for Business Value and National Retail Federation study found that 45 per cent of surveyed people used AI during their buying journeys: 41 per cent for product research, 33 per cent to interpret reviews and 31 per cent to find promotions. At the same time, 72 per cent continued to shop in physical stores.
What this means for brands
The transition is towards decision processes shaped by AI across channels, not simply from physical to digital retail.
Source and scope
IBM Institute for Business Value and NRF, Agentic Commerce, 2026. The study included more than 18,000 people in 23 countries and 200 executives in retail, consumer products and ecommerce.
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Are people ready to let an AI agent complete a purchase?
A significant share of people appear open to delegating the transaction after defining their preferences. In Adyen’s 2026 US retail study, 51 per cent said they would be willing to let AI manage the complete shopping process, including the purchase. This measures stated willingness, not the proportion of purchases already completed autonomously.
What this means for brands
Brands must prepare to be evaluated, selected, purchased, returned and supported through processes mediated by agents, while preserving explicit permission and accountability.
Source and scope
Adyen Retail Report 2026, United States. The research covered 2,000 US participants and 500 US retail merchants.
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What makes people trust an AI agent with the final purchase?
Trust in an autonomous purchasing agent depends on transparency, accountability and control. Adyen found that participants wanted assurance of the best price or value, clear accountability for an incorrect purchase and an explanation of why an item was selected. An international study from 2026 similarly found that transparency strengthened cognitive trust, accountability strengthened affective trust and decision control reduced perceived risk.
What this means for brands
An agentic experience should explain decisions, identify responsibility, allow limits to be changed and provide a clear route for correction, return or human intervention.
Sources and scope
Adyen Retail Report 2026 and Letting the bot decide, Journal of Retailing and Consumer Services, 2026.
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How could agentic shopping change brand loyalty?
Agentic shopping may weaken habitual loyalty when an agent chooses according to price, availability or functional criteria instead of brand preference. Adyen found that 27 per cent of retailers considered the possible loss of their direct customer relationship a barrier to agentic commerce, while 59 per cent of participants said loyalty benefits would make them more likely to continue shopping with a retailer.
What this means for brands
Quality, membership benefits, service history, delivery reliability and return conditions must become legible to both people and agents.
Source and scope
Adyen Retail Report 2026, United States.
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How large could agentic commerce become?
Morgan Stanley estimates that AI agents could influence between USD 190 billion and USD 385 billion of US ecommerce spending by 2030. This would represent approximately 10–20 per cent of the market. Groceries and consumer packaged goods may be early growth categories because purchases are frequent, guided by clear criteria and often repetitive.
What this means for brands
Information that machines can interpret about ingredients, compatibility, pack size, availability, pricing, sustainability and replenishment can become commercially decisive.
Source and scope
Morgan Stanley Research, Agentic Commerce Market Impact Outlook, 2025. These figures are forecasts, not observed future results.
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What creates trust in an AI chatbot?
Trust in an AI chatbot is created primarily through demonstrated ability and integrity. A 2025 study involving more than 1,300 participants found perceived ability and integrity to be significant foundations of trust. Greater trust was associated with stronger intentions to use the chatbot and greater willingness to disclose information.
What this means for brands
Character and conversational style matter, but competence comes first. The system must give accurate answers, respect its role, protect information and acknowledge uncertainty.
Source and scope
When the bot walks the talk, Journal of Experimental Psychology: General, 2025. The research comprised two pilot studies and a main study with 1,001 participants.
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Does personalisation automatically increase trust in an AI chatbot?
No. Personalisation can increase relevance and willingness to interact without automatically increasing trust. In experimental research, a personalised chatbot was perceived as more capable, benevolent and human in its behaviour and generated stronger usage intentions, but personalisation did not directly increase trust. Separate retail research found that generative AI increased perceived usefulness and familiarity while trust remained largely unchanged and privacy concerns increased.
What this means for brands
Personalisation needs transparent data use, permission boundaries and a way to correct or remove remembered preferences.
Sources and scope
When the bot walks the talk, 2025 and From familiarity to acceptance, Journal of Retailing and Consumer Services, 2025.
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Can empathetic communication close the gap between AI and human service?
Carefully designed empathetic communication can significantly improve how people evaluate an AI service agent. Across several studies, lower evaluations of chatbots were explained by lower perceived empathy. When the chatbot communicated more empathetically, evaluations improved and in one study reached a level comparable with a human agent. The improvement came from communication rather than an avatar designed to look human.
What this means for brands
Designed empathy means recognising the context, acknowledging the concern and helping the person move forward without implying that the machine experiences human feelings.
Source and scope
Consumer reactions to chatbot versus human service, Journal of Retailing and Consumer Services, 2024. The research included 714 participants across three vignette studies and a further study involving direct interaction.
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Can an AI character strengthen brand trust?
An appropriately designed AI character can make a brand more recognisable, relatable and engaging. Research into branded voice assistants found positive relationships between brand anthropomorphism, brand trust and emotional and behavioural engagement. The result does not mean that every interface should imitate a human as closely as possible.
What this means for brands
A useful character requires a defined role, personality, vocabulary, emotional range and behavioural boundaries. Role fit and trustworthy performance are more important than maximum resemblance to a human.
Source and scope
Hey Google, I trust you!, Journal of Retailing and Consumer Services, 2024. The study focused on young adults and branded voice assistants.
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How should a brand disclose that a conversational agent is AI?
A brand should disclose an agent’s artificial identity clearly, naturally and early enough for the person to understand the interaction. Experimental research suggests disclosure can reduce trust in some contexts, but strong social presence, competent communication and appropriate timing can reduce the effect. This evidence must never be used to justify concealment.
What this means for brands
The introduction should explain that the interface is AI, what it can do, how it uses information, where its limitations lie and when a human can take over. Applicable transparency obligations, including Article 50 of the EU AI Act, must also be considered.
Source and scope
The impact of providing cues that reveal a nonhuman identity, European Journal of Marketing, 2025.
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Can chatbot service quality influence brand loyalty?
Chatbot quality can influence the wider brand relationship because people interpret the interface as evidence of the organisation’s competence and reliability. A 2026 banking study found positive relationships between information quality, system quality and trust; trust was associated with satisfaction, while satisfaction was associated with loyalty and positive electronic word of mouth.
What this means for brands
Incorrect information, broken conversational paths and poor escalation can damage the brand. Reliable answers, continuity and effective resolution can strengthen satisfaction.
Source and scope
Trust in the digital age: Chatbot service quality, Telematics and Informatics Reports, 2026. This was a correlational study of 362 banking customers in Peru and does not establish universal causality.
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How much autonomy should an AI agent have?
The appropriate level of autonomy depends on the consequences, the person’s preferences and the ability to reverse an action. A Wharton evidence review suggests that moderate autonomy is often more acceptable than either minimal assistance or complete automation. People value setting boundaries, reviewing important decisions and intervening when necessary.
What this means for brands
Autonomy should increase gradually and remain based on explicit permission: recommend first, prepare an action next and execute only under defined authority. Consequential actions should remain visible, reviewable and reversible.
Sources and scope
Wharton, Blueprint for AI Agent Adoption, 2026 and Letting the bot decide, 2026.
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What technical foundations are emerging for agentic commerce?
Agentic commerce requires shared protocols for exchanging product, identity, permission and transaction information securely. OpenAI’s Agentic Commerce Protocol, Google’s Universal Commerce Protocol, Visa’s Trusted Agent Protocol and Mastercard Agent Pay represent different parts of that emerging infrastructure. They do not yet form one universal standard.
What this means for brands
Preparing for agents requires reliable product data, current inventory and pricing, clear merchant identity, policies that machines can interpret, secure permissions, payment handling and operational processes for returns and support.
Primary sources
OpenAI Agentic Commerce Protocol, Google Universal Commerce Protocol, Visa Trusted Agent Protocol and Mastercard Agent Pay.
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How much are enterprises investing in conversational AI?
Juniper Research estimated that global revenue generated by enterprise spending on conversational AI would rise from USD 14.6 billion in 2025 to more than USD 23 billion in 2027. Across the three years from 2025 to 2027, conversational AI services were forecast to generate approximately USD 57 billion in global revenue.
What this means for brands
Conversational AI is moving from isolated experimentation into operational infrastructure spanning messaging, voice, service, sales and increasingly agentic workflows.
Source and scope
Juniper Research, Global Conversational AI Market 2025–2029. The forecast measures revenue originating from enterprise spending on conversational AI platforms, not sales completed through them.
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How fast could advertising in generative search grow?
WPP Media forecasts global advertising revenue from generative search of USD 5.1 billion in 2026, approximately USD 32 billion in 2028 and more than USD 100 billion by 2030. Its category includes paid placements and impressions within discovery environments shaped by AI, including search experiences generated by AI and standalone conversational AI products.
What this means for brands
AEO and GEO are preparation for an emerging media and commerce channel in which brands may compete through both earned inclusion and paid visibility inside generated answers.
Source and scope
WPP Media, This Year Next Year: 2026 Midyear Global Advertising Forecast. These are forecasts for a newly defined advertising category and should not be treated as confirmed future expenditure.
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Are advertisers already investing in answers generated by AI?
Yes. In a 2026 McKinsey survey, more than half of participating advertisers said they were investing in advertisements embedded in answers generated by AI. Almost 75 per cent expected AI to increase total media spending during the following 12 months, while one in three expected AI to improve return on advertising spend by more than 10 per cent.
What this means for brands
AI is changing both campaign execution and the environments in which people discover, compare and select brands. Being surfaced and recommended is becoming a distinct commercial objective.
Source and scope
McKinsey, The agentic advertising economy, 2026. The survey covered 182 agency and marketing leaders from the United States, representing organisations with annual marketing spending between USD 5 million and more than USD 5 billion.
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Are advertising budgets moving from search towards conversational AI?
Early evidence indicates that part of the budget is moving from conventional search and the open web into discovery shaped by AI. McKinsey reports that roughly 40 per cent of expenditure reallocated to formats driven by AI is shifting away from traditional search and the open web. WPP Media expects generative search to grow rapidly and forecasts that conventional search could begin to decline from 2029, while remaining the larger channel for some time.
What this means for brands
In search, a brand competes for ranking and clicks. In conversational discovery, it also competes to enter the answer, comparison set and recommendation. SEO, AEO, GEO and product information designed for agents must work together.
Sources and scope
McKinsey, 2026 and WPP Media, 2026. These are projections of an emerging transition, not a recommendation to abandon conventional search.
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How quickly are brands investing in agentic and conversational marketing?
Agentic and conversational marketing are moving rapidly from awareness to practical investment. In the IAB 2026 Outlook Study, 78 per cent of advertising buyers expected greater focus on generative AI in media campaigns, 73 per cent on optimising content for answers generated by AI and 66 per cent on agentic AI for ad buying and campaign execution. Gartner separately predicts that 60 per cent of brands will use agentic AI for streamlined individual interactions by 2028.
What this means for brands
Investment needs to extend beyond technology licences to knowledge management, data governance, conversational design, brand voice, measurement, integration and human oversight.
Sources and scope
IAB 2026 Outlook Study, based on 205 advertising buyers, and Gartner’s 2028 forecast for agentic marketing.