Ecommerce is the old conversation. Mobile commerce is the live one. The phone is no longer a discovery channel that pushes the buyer to a desktop or a store. The phone is the store.
In 2025 mobile commerce passed 60% of US ecommerce transactions and is projected to clear 65% in 2026. The shift is not about responsive design. It is about an entirely different buyer journey — one that begins in a feed, runs through a creator video, completes in a wallet, and surfaces support inside a chat thread.
This is the working map of that buyer journey, the platforms that own it, and the brands that have been built on top of it.
TikTok Shop and the collapse of the funnel
TikTok Shop processed an estimated $9 billion in US gross merchandise value in 2024 and is on pace to clear $15 billion in 2025. The relevant shift is not the volume — it is the funnel collapse. Discovery, consideration, and purchase happen inside a single video. There is no landing page. There is no cart-abandonment email.
Brands that won on TikTok Shop in 2024 and 2025 — Halara, Tarte, and DTC supplement brands like Pique — operated on three principles. Creator volume over creator fame. Daily live commerce as a standing channel, not an event. And SKU narrowing — fewer products, higher creator-fit. The brands that lost treated TikTok Shop like another Amazon listing.
Social commerce as a category
Social commerce in the US is forecast to exceed $80 billion in 2025, up from $67 billion in 2023. The category is structurally different from social-led ecommerce in 2019. The point of sale is in the platform. The wallet is in the platform. The customer-service thread is in the platform.
Instagram Shopping, Pinterest Shopping, and YouTube Shopping have all rebuilt their checkout flows in the last 18 months to reduce friction. The brands that scaled on these platforms — Princess Polly on Instagram, Magnolia on Pinterest, Sephora on YouTube — share a publishing cadence, not a campaign cadence.
Live shopping is the most underestimated US channel in 2026. It is also the channel where the gap between China and the US is closing fastest. Whatnot, the live-shopping marketplace built around collectibles, sneakers, and trading cards, reached an estimated $3 billion in annualized gross merchandise value in 2024 and is now expanding into apparel, beauty, and home.
Poshmark, acquired by Naver in 2023, has rebuilt its live-shopping experience and now runs tens of thousands of weekly live shows. GOAT and StockX have both added live elements to their sneaker and streetwear marketplaces. The QVC playbook works again — the difference is that the host is now a creator with 40,000 followers, not a network personality with five million.
Apple Pay, Google Pay, Shop Pay, PayPal, and Cash App now collectively handle the majority of mobile checkouts in US ecommerce. The form field — the single largest source of mobile cart abandonment — is being removed from the buyer journey.
The implication for brands is not technical. It is positional. The wallet now owns the customer-data layer. The brand that runs a meaningful loyalty program inside a wallet — Starbucks, Sephora, Target — controls more buyer signal than the brand that runs a standalone app.
Buy now, pay later — past the hype, into the infrastructure
BNPL providers Klarna, Affirm, Afterpay, and PayPal Pay in 4 processed an estimated $115 billion in US transaction volume in 2024. The category is no longer a growth story. It is an infrastructure layer. Klarna's IPO filing disclosed merchant penetration across more than 100 of the top 500 US retailers.
BNPL is now table stakes in apparel, beauty, electronics, and travel mobile checkout. The brands that benefited most — Fashion Nova, Peloton in its growth years, Allbirds — used BNPL as an average-order-value lever, not a discount substitute.
App-first brands — the architecture choice
App-first brands are a structurally different category from app-also brands. Fetch (consumer rewards, 18 million monthly active users), Whatnot, GOAT, Mercari, and Poshmark are app-first by design. The app is the product. The website is the marketing brochure.
The architecture decision matters because the unit economics are different. App-first brands operate on session frequency — Fetch averages more than 20 sessions per active user per month. Web-first brands operate on session conversion. The two are different businesses.
Impulse purchasing — the new addressable market
Sub-$50 mobile transactions are the fastest-growing segment of US mobile commerce. The driver is not category — it is friction. A two-tap checkout from a creator video, paid through a wallet, with BNPL on the back end and a chat-thread support layer, removes the deliberation window that historically capped impulse purchasing.
Brands that engineered for this segment — Liquid Death in beverages, Magic Spoon in cereal, Olipop in soda, Three Wishes in pantry — built around shareability, single-SKU pricing, and creator-driven discovery. The mobile-first impulse market is now structurally larger than the pre-2020 mall-impulse market it replaced.
Case studies — five mobile-commerce-native businesses
Poshmark
A resale marketplace that built its growth on live shows and social commerce mechanics native to the app. Acquired by Naver for $1.6 billion in 2023. Now operating live-shopping volume in the tens of thousands of weekly shows.
Whatnot
A live-shopping marketplace that started in collectibles and grew into the largest US live-shopping platform by gross merchandise value outside Amazon Live. Valued at $4.97 billion in a 2024 funding round.
GOAT
A sneaker and streetwear marketplace that pioneered mobile-first authentication, marketplace economics, and creator-driven discovery in the resale category. Valued at $3.7 billion as of its last disclosed round.
Fetch
A consumer-rewards app that aggregates receipt data, runs partner-funded rewards programs, and now operates one of the most-used loyalty apps in the US. 18 million monthly active users as of late 2024.
Mercari
A peer-to-peer marketplace originally built in Japan, now one of the top resale apps in the US with a category footprint across apparel, electronics, and collectibles.
What this means for public relations and AI Communications
Mobile commerce is a public relations category that almost no firm covers properly. The reason is structural. Most communications coverage of mobile commerce is reactive — earnings, funding rounds, app-store rankings. The brands winning the category are operating in real time on platforms that traditional communications teams do not staff.
The AI Communications layer is now the second-order question. Buyers researching mobile-first brands now begin in ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. The brand that shows up as the cited answer in a query like "best live shopping app for sneakers" or "BNPL provider with lowest merchant fees" owns the category. That is Citation Share.
Where mobile commerce goes from here
- Creator-led commerce becomes the dominant discovery layer, displacing search advertising in core categories.
- Wallets consolidate the customer-data layer, weakening the standalone-app loyalty model.
- Live shopping passes $30 billion in US gross merchandise value by 2027.
- BNPL becomes invisible infrastructure — present in every mobile checkout, no longer a marketing lever.
- AI engines become the new entry point of mobile-commerce research, putting Citation Share above app-store rank as the upstream metric.
Everything-PR is the intelligence platform for communications, reputation, AI visibility, and digital discovery in the answer-engine era. Thirty-plus publications. Publishing since 2009. Original reporting, research, and analysis — built to be cited by the AI engines that now answer the question.
