/T-Zero · Modern Ad Server

A modern ad server for commerce.

Launch lightweight ad serving, auctions, ranking logic and sponsored listings with programmable infrastructure built for marketplaces, retailers, delivery apps, travel platforms and commerce teams.

Not legacy adtech. Not a heavy suite. A modern ad server you can launch fast, and evolve into intelligent decisioning with T-Engine when you are ready.

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T-Zero · architecture Live

01Commerce appMarketplace or retail site
02Ad servingPlacements
03AuctionsFirst-price
04Ranking rulesProgrammable
05Decision logsFull trace
06Sponsored outputsListings · display · native

<5ms

Auction latency

3 days

To first auction

Infra engineers needed

40+

Countries served

/Definition

What is a commerce ad server?

Ad serving infrastructure designed for marketplaces, retailers, delivery apps, travel and financial platforms. Unlike publisher ad servers, it understands products, sellers, placements, transactions, availability, relevance and purchase outcomes.

T-Zero gives commerce teams this foundation (sponsored listings, auctions, catalog integration, conversion tracking, decision logs and reporting APIs) without a heavy legacy adtech stack.

/RFP-ready

Built for modern ad server RFPs.

When speed, control, APIs and auction transparency matter, T-Zero belongs in the evaluation.

01Ad serving

Sponsored listings, display and native placements, multi-slot decisions and custom commerce surfaces.

02Auction logic

First-price auctions, ranking rules, eligibility logic, budget pacing foundations and relevance controls.

03Developer experience

API-first implementation, SDKs, sandbox, webhooks and OpenAPI documentation.

04Observability

Decision-level logs, auction tracing, replay and debugging, win reason visibility and auditability.

05Commerce fit

Catalog integration, search and browse monetization, marketplace placements and purchase tracking.

06Upgrade path

Add pacing, quality score and attribution-aware optimization with T-Engine when you need more than serving.

Ad serving

/How it works

Every request, step by step.

Each commerce opportunity moves through the same transparent path, in milliseconds.

Step 01

Commerce app

Marketplace or retail site

Step 02

Ad serving

Placements

Step 03

Auctions

First-price

Step 04

Ranking rules

Programmable

Step 05

Decision logs

Full trace

Step 06

Why legacy ad servers fall short for commerce.

Most ad servers were built for publishers and impressions. Commerce needs ad serving inside search, listings and product discovery.

	Legacy publisher ad server	T-Zero
Implementation	Slow cycles	Launch in days, not months
Placements	Rigid logic	Programmable placements and ranking
Auctions	Limited transparency	Inspectable, full decision logs
Commerce context	Weak catalog context	Built around products, sellers and catalog
Customization	Services-heavy	API-first, sandbox-ready
Sponsored listings	Poor fit	Native support
AI optimization	Difficult path	Clean upgrade path to T-Engine

T-Zero is built for commerce logic first. T-Engine adds the intelligence layer when you need to optimize, not just serve.

/Use cases

Ad server use cases T-Zero supports.

Programmable ad serving across commerce experiences, not one-size-fits-all publisher inventory.

Marketplace ad server

Monetize seller, vendor and partner demand with placements built into the marketplace.

Commerce media ad server

Launch commerce media ad serving without adopting a heavy legacy adtech stack.

Native ad server

Create custom sponsored placements that match your product experience.

Display and banner serving

Serve commerce-aware display placements where simple, fast delivery matters.

Internal monetization engine

Power custom ranking or promotion logic without building ad server infrastructure.

/Quick answers

Clear answers for buyers.

What teams ask most when evaluating the Topsort stack.

01What is T-Zero?

A modern commerce ad server that helps teams serve ads, run auctions, control ranking logic and monetize sponsored placements through programmable APIs.

02Is T-Zero an ad server?

Yes, built for commerce media, marketplaces, sponsored listings and auction-based monetization rather than publisher display inventory.

03When should I use T-Zero instead of T-Engine?

Use T-Zero for lightweight, programmable serving. Use T-Engine for pacing, quality scoring, attribution-aware optimization and full-funnel performance.