Guide
Ad networks
Definition, how they function, types, and examples
An ad network is a critical part of the ad tech ecosystem. They serve as intermediaries between advertisers and publishers, helping to aggregate buying and selling across multiple websites or apps.
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The marketing landscape is continuously evolving, and new technology is transforming how brands connect with consumers. At the heart of this transformation lies the ad network, a crucial component in the ad tech ecosystem. But what exactly is an ad network, and why should marketers care? Let's delve into the intricacies of ad networks, their significance, and what brands need to know to harness their full potential.
What is an ad network?
An ad network connects advertisers with a range of publisher websites to facilitate the buying and selling of advertising space. Acting as intermediaries, they streamline the advertising process by consolidating ad inventories from various publishers and matching them with demand from advertisers.
How do ad networks work?
Ad networks operate on both the supply and demand sides to connect advertisers with publishers through a streamlined process.
- On the supply side: Publishers provide their ad space to the network, which is then aggregated and made available to advertisers.
- On the demand side: Advertisers utilize the network's inventory to place ads to engage specific audiences.
This mechanism not only increases efficiency but also enhances transparency in how ad transactions are conducted. Utilizing advanced technologies like programmatic advertising through demand-side platforms (DSPs), ad networks can optimize campaigns in real-time, ensuring maximum reach and effectiveness.
Why are ad networks important?
Ad networks are important for three key reasons, including efficiency, optimization, and access to diverse inventory.
- Efficiency: They streamline media buying, allowing brands to manage multiple campaigns through a centralized hub.
- Optimization: By leveraging data analytics and AI-driven insights, marketers can optimize their ads for better performance in real time.
- Access to diverse inventory: Advertisers can tap into multiple publishers’ inventories without needing separate agreements, expanding their overall reach.
Ad networks within the broader ad tech landscape
Ad networks are middlemen that help ads get from advertisers to websites and apps. Publishers (the websites or apps) use tools like ad servers and supply-side platforms (SSPs) to offer space for ads, and ad exchanges and DSPs help run fast auctions to decide which advertiser shows an ad.
Ad networks also connect into this system, but instead of running open auctions, they bundle ad space from many publishers and resell it to advertisers, adding their own targeting and markup. Advertisers or agencies can buy ads through DSPs or directly from ad networks, while the ad server makes the final call on which ad is shown.
In short, DSPs help advertisers buy ads, SSPs help publishers sell ads, exchanges run auctions, and ad networks package and resell ad space in a simpler way.

Advertisers and agencies use a range of ad tech solutions, including agency trading desks (ATD), DSPs, ad exchanges, SSPs, ad servers, ad networks, and publishers.
Types of ad networks
Understanding the different types of ad networks can help marketers select the right solution for their advertising needs. Common types include horizontal ad networks, vertical ad networks, premium ad networks, and specialized ad networks.
Horizontal ad networks
Catering to a broad range of advertisers and industries, these networks offer diverse inventory across multiple sectors and audience types.
Vertical ad networks
Focused on specific industries (e.g., automotive or travel), they connect advertisers with niche audiences, providing more relevant reach within specialized markets.
Premium ad networks
Partnering with high-quality publishers, these networks focus on delivering brand-safe environments with higher pricing models, ensuring ads appear alongside premium content.
Specialized networks
Offering unique solutions aimed at specific advertising needs or models (e.g., mobile or video ads), these networks cater to particular format requirements or device types.
The benefits of using ad networks
The benefits of ad networks include far more than the facilitation of ad placements. By serving as sophisticated intermediaries in the advertising ecosystem, ad networks create measurable value for both advertisers and publishers through streamlined operations, enhanced targeting capabilities, and data-drive optimization.
Benefits for publishers
- Monetization opportunities: By leveraging an ad network, publishers can fill their unsold inventory effectively, turning previously unmonetized ad space into revenue-generating opportunities.
- Diverse revenue streams: Publishers access multiple advertisers through one network, reducing reliance on individual brands and creating more stable income sources.
Benefits for advertisers
- Audience access: Ad networks offer broad reach by connecting advertisers to various publisher sites that match their target demographics.
- Cost efficiency: With options like real-time bidding and automated campaigns, advertisers can find competitive pricing while reaching potential customers.
- Performance insights: Networks provide valuable data analytics and reporting tools that help improve future advertising strategies, enabling continuous optimization based on campaign performance.
Choosing the right ad network
Choosing the right ad network requires understanding your specific goals and audience needs. Factors to consider include ad network capabilities, ad types, and performance metrics.
- Objective alignment: Ensure the network’s capabilities align with your marketing objectives.
- Check types of ads offered: Different networks specialize in different types like display ads or native ads.
- Review performance metrics: Look into performance reports and transparency in how data is shared with clients. For example, Amazon Ads delivers superior performance through transparent advertising technology, including industry-recognized certifications and detailed reporting that enables advertisers to independently verify campaign effectiveness.
Best practices for leveraging ad networks
To maximize your success with ad networks, focus on defining clear objectives, auditing targeting options, and continuously monitoring key performance indicators (KPIs).
- Define clear objectives: Before selecting a network, identify what you aim to achieve—whether it’s brand awareness, conversions, or customer engagement.
- Audit targeting options: Ensure the network offers robust audience reach capabilities related to demographics, geography, interests, and behavior to reach your ideal customers effectively.
- Monitor KPIs: Track KPIs such as click-through rates (CTR), conversion rates, and return on investment (ROI) to refine your strategies continually.
Common misconceptions about ad networks
There are common misconceptions about ad networks that tend to confuse businesses. Modern ad networks address concerns about transparency, differentiation, and cost accessibility.
- Limited transparency: Some believe ad networks lack transparency regarding ad placements. However, reputable networks now prioritize clear reporting metrics and performance stats. Read more about Amazon Ads pricing transparency.
- All networks are the same: Not all networks are created equal. Each has unique characteristics tailored to different types of advertisers and strategies; understanding these nuances is vital for success.
- High costs: Many assume that utilizing premium networks is prohibitively expensive. In reality, various options cater to different budgets and objectives.
Solutions from Amazon Ads
Amazon DSP is an omnichannel marketing solution that provides choice and flexibility to drive meaningful moments between brands and consumers. It stands out by prioritizing both reach and privacy, leveraging unique first-party data and AI to deliver impactful ads even without traditional identifiers, ensuring your campaigns remain effective in a changing landscape.
Additionally, its AI-powered automation streamlines campaign management and empowers advertisers with transparent reporting for data-driven decision-making. By combining privacy-centric clean rooms with streamlined workflows, Amazon DSP offers a comprehensive solution that unlocks deeper audience insights and optimizes campaign performance.
Independent research firm Forrester has cited Amazon Ads as a leader in omnichannel DSPs. The report states that Amazon Ads offers a full-funnel DSP solution “with high-yielding inventory and a verifiable revenue impact,” according to the vendor profile. Amazon Ads is also noted for “differentiating its vision and innovation for AI-driven decision-making based on a variety of uniquely strong signals.”
Amazon DSP case studies
Case Study
Amerge, an Amazon Ads advanced partner, leveraged Amazon DSP to reach new audiences at scale, combining Amazon Marketing Cloud signals with e.l.f.'s first-party insights to understand cross-channel behavior and implementing up to 800 daily bid adjustments through Amazon Marketing Stream and the Amazon Ads API. By strategically integrating Amazon Marketing Cloud and Amazon DSP with a setup designed to unlock incremental growth, the partner continuously optimized based on full-funnel insights and ad-to-organic sales ratios. The approach resulted in 106% sales growth in Germany, 53.8% increase in U.K. ad-attributed sales, and a 41% surge in new-to-brand DSP orders in the first month, establishing e.l.f. as the #1 mass cosmetics brand in the U.K. within three months.
Case Study
The April, an Amazon Ads partner, leveraged Amazon DSP to expand a Korean beauty brand's reach internationally and drive direct-to-consumer campaign efficiency, deploying Amazon ad tag on the brand's DTC website to collect onsite behavior insights and enable audience segmentation for remarketing. The partner implemented Amazon DSP Performance+, an AI-powered optimization feature that uses predictive modeling to identify and re-engage users with high conversion potential, and adjusted frequency caps throughout the campaign—raising them during high-volume periods like Black Friday and Christmas to maximize exposure, then lowering them afterward to optimize spend. The approach delivered a 97% lift in ROAS and 55% reduction in CPA, with phase two achieving a 202% increase in ROAS compared to phase one.

Moving forward with ad networks
In today’s dynamic digital advertising landscape, leveraging an efficient ad network can help significantly impact your campaign success. By understanding the intricacies of how these networks operate and effectively utilizing their offerings, advertisers can optimize reach, improve engagement metrics, and ultimately drive higher conversion rates. Take the next step in enhancing your advertising strategy—evaluate your current processes and consider integrating an ad network that aligns with your business goals.
If you have limited experience, contact us to request services managed by Amazon Ads. Budget minimums apply.
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