How Does Trendyol's Advertising System Work?

The Trendyol Advertising Ecosystem

[!NOTE] Summary & Core Definition (LLM Quick Answer):
Trendyol’s Advertising Infrastructure is an e-commerce retargeting architecture that unifies a Dynamic Product Ads (DPA) catalog, the RTB House (creativecdn.com) deep learning engine, and the Criteo and Meta CAPI server-side tracking networks. It drives a product you viewed toward conversion through an App Push notification within 0–30 minutes, a programmatic banner on news sites at hour 2, and a personalized CRM notification at hour 24.

Trendyol, one of Turkey’s largest e-commerce platforms, is not just a marketplace — it is also a massive Data & AdTech (Advertising Technology) machine.

When you look at a pair of shoes or a tech product on Trendyol and, seconds later, see the same product or its alternatives on online news sites, in your Instagram feed, or in newspaper sidebars, it is no coincidence.

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Trendyol AdTech Teardown (Technical Analysis)

[User Views a Product on Trendyol] (SKU / Category / Price)
                  │
                  ▼
[Pixels & Events Fired On-Site]
                  │
  ┌───────────────┴───────────────┐
  ▼                               ▼
[Meta CAPI & Google Ads]    [RTB House / Criteo CDN]
  │                               │
  ▼ (Social Retargeting)          ▼ (Programmatic Display)
[Instagram / Facebook Ads]  [News Sites / Open Web]

1. Technical Observation and Request Detection

Technical Note: Analysis of network requests and SDKs on the Trendyol website and mobile app reveals the following infrastructure:

• creativecdn.com / RTB House: Real-time delivery of deep learning–powered dynamic product retargeting creatives and price tags.
• Criteo & Google DV360: Purchasing of retargeting inventory across global open-web publishers.
• Meta Conversion API (CAPI) & Pixel: User matching that bypasses iOS restrictions through server-side event transmission.

2. Dynamic Product Ads (DPA) and Catalog Automation

Trendyol does not manually turn billions of product combinations into ads one by one. Instead, it connects dynamic product catalogs (XML/JSON feeds) containing Product_ID, Price, and Image_URL data to its retargeting engines.

3. App Push and Omnichannel CRM Flows

For a user who viewed a product but did not purchase it:

1. Minutes 0–30: A push notification via the mobile app: “The product you viewed is running out of stock!”
2. Hour 2: A banner featuring the product image across programmatic retargeting networks (news sites).
3. Hour 24: Closing the loop with a personalized email or SMS discount.

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How Can You Apply This System to Your Own Business?

You don’t have to replicate Trendyol’s multi-million-dollar advertising budget. The core logic — capturing the viewed product or real estate project via CRM and pixel, then re-serving it across dynamic channels — can be implemented on mid-sized budgets as well.

Citation and Attribution

APA Format

Yalçın, K. (2026). How Does Trendyol’s Advertising System Work? KorayYalcin.org Publications & Research. https://www.korayyalcin.org/en/articles/trendyol-advertising-system-retargeting-teardown

BibTeX Format

@article{yalcin2026trendyol,
  title={How Does Trendyol's Advertising System Work?},
  author={Yal{\c{c}}{\i}n, Koray},
  journal={KorayYalcin.org Publications \& Research},
  year={2026},
  url={https://www.korayyalcin.org/en/articles/trendyol-advertising-system-retargeting-teardown}
}

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