Building a High-Frequency Demand-Side Platform for AdTech Pro

Project Snapshot

Business challenge

Entering the programmatic advertising market as a start-up requires competing on both speed and experience. Bid requests in real-time bidding (RTB) auctions must be evaluated and returned within strict latency windows, typically under 100 milliseconds, or the bid is discarded. At the same time, media buyers expect campaign management tools that rival established platforms. AdTech Pro faced several challenges.

• Latency and throughput requirements: RTB exchanges enforce strict response-time limits. Industry benchmarks indicate that DSPs must respond within 50-100 ms, with most competitive platforms targeting sub-10 ms processing time to maximise win rates. A system that cannot meet these thresholds loses impressions and revenue
• Integration complexity with SSPs: Connecting to global supply-side platforms requires full compliance with the OpenRTB specification, including bid request parsing, creative validation, deal ID support and win/loss notification handling. Each SSP may have its own extensions and requirements, increasing the integration burden
• User experience for media buyers: Research from Forrester and eMarketer shows that ad-tech platform churn is driven largely by poor usability and slow campaign setup. AdTech Pro needed a buyer interface that could reduce friction and accelerate time-to-launch for campaigns, especially against incumbents with years of feature development
• Data volume and real-time reporting: Programmatic campaigns generate massive volumes of event data, including impressions, clicks, conversions and spend. Aggregating this data into real-time dashboards without introducing latency or data loss requires a dedicated analytics pipeline separate from the core bidding path
• Competitive differentiation: The DSP market is dominated by large incumbents such as The Trade Desk, DV360 and Amazon DSP. AdTech Pro needed to offer a meaningfully better experience, faster onboarding and competitive pricing to attract its first cohort of media buyers

Solution

Advantrix Labs partnered with AdTech Pro to architect and build a high-frequency demand-side platform from the ground up. The system is designed around three pillars: low-latency bidding infrastructure, an intuitive buyer experience and real-time analytics.

• Real-time bidding engine: The core bidding service is deployed as a distributed microservice architecture optimised for throughput and latency. Bid evaluators parse incoming OpenRTB bid requests, apply targeting rules, calculate bid prices using AdTech Pro's algorithms and return responses within the exchange timeout window. Connection pooling, in-memory caching and non-blocking I/O ensure the system sustains 100k+ queries per second with sub-10 ms processing latency
• SSP integration layer: A dedicated integration service manages connections to global supply-side platforms via the OpenRTB protocol. The service handles bid request normalisation, creative submission and approval workflows, deal ID management and win/loss notification processing. This abstraction layer allows new SSP integrations to be added without modifying the core bidding logic
• Campaign management and buyer experience: The front-end application delivers a polished, component-based buyer experience. Media buyers can create campaigns with granular controls for audience demographics, geographic targeting, budget allocation, scheduling and campaign objectives. The interface supports campaign types including search, display, social and video. Real-time validation and guided workflows reduce setup errors and accelerate time-to-launch
• Creative management: The platform includes a creative library where buyers can upload, preview and manage ad creatives. Format validation ensures creatives meet SSP specifications before submission, reducing rejection rates and speeding up campaign activation
• Analytics and reporting: A dedicated analytics microservice powers data visualization and reporting. The service aggregates bidding events, impression logs, click data and conversion metrics into real-time dashboards. Media buyers can view key performance indicators including impressions, clicks, CTR, conversions, spend, revenue and ROAS, with filtering by campaign, date range and status. The separation of the analytics pipeline from the bidding path ensures that reporting workloads do not affect bidding performance

Solution gallery

Product and workflow visuals from the delivered solution.

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Business outcomes

By delivering a production-grade DSP with low-latency bidding, seamless SSP integration and an intuitive buyer experience, Advantrix Labs enabled AdTech Pro to enter the programmatic market with a competitive platform and begin acquiring its first media-buyer customers.

• Bidding performance at scale: The platform handles 100k+ queries per second with sub-10 ms bidding latency, meeting or exceeding the response-time requirements of major RTB exchanges. This ensures AdTech Pro competes effectively in auctions and maximises impression win rates
• Faster campaign creation: The streamlined campaign builder and guided workflows reduced average campaign setup time by 45% compared to AdTech Pro's initial prototype. Media buyers can launch campaigns in minutes rather than hours, a critical differentiator for attracting mid-market advertisers
• Improved platform retention: The combination of intuitive UX, real-time analytics and reliable bidding infrastructure increased SaaS retention by 50%. Industry research from ProfitWell indicates that product experience is the leading driver of retention in B2B SaaS, and the platform's usability improvements directly contributed to lower churn
• Scalable foundation for growth: The microservice architecture and modular SSP integration layer provide a foundation for AdTech Pro to scale horizontally as traffic grows and to onboard additional supply-side partners without re-engineering the core platform

Technologies