Best Demand Side Platform Development Companies in 2025

The world of programmatic advertising is driven by automation, real-time data analytics, and the growing demand for precision targeting. In such a dynamic environment, having a high-performance demand-side platform (DSP) becomes essential for advertisers who want to control ad spend and successfully reach their audiences across multiple channels.

Today, there are a lot of ready-made solutions. However, the lack of flexibility makes them inefficient for specific business needs and goals. Here’s where custom-built DSPs come into play.

In this article, we will share a list of the best DSP development companies and mention the key factors that you should pay attention to while making a choice.

What is a DSP?

The introduction of display and video DSP platforms makes it possible to avoid negotiating with publishers one by one. Instead, brands and advertisers can rely on DSPs to access multiple ad exchanges in real time.

How does a DSP work?

When a user visits a website or app, the ad space on that page is immediately offered through an ad exchange. A DSP evaluates whether the user matches the advertiser’s target audience. This evaluation is based on a variety of factors, such as:

• Demographics (age, gender, income level, etc.);
• Behavior (browsing habits, purchase behavior, and others);
• Location;
• Used device and platform.

If the user fits the targeting criteria, the DSP automatically bids on the ad placement (this process in programmatic advertising is known as real-time bidding).

If the bid wins, the ad is displayed instantly. Just milliseconds are required for the execution of all these steps.

What is a Demand-Side Platform (DSP): How Does It Work

Learn how DSP platform enables advertisers to buy and sell digital ad space via real-time bidding in programmatic advertising.

What are the key benefits of DSP platforms?

• Automated advertising buying. Advertisers can purchase ad inventory from thousands of publishers without manual negotiations. As a result, their ads can reach a significantly broader audience than was possible before the adoption of DSP programmatic methods.
• Accurate audience targeting and segmentation. Best programmatic ad platforms integrate first-party and third-party data. This allows brands to serve ads to the right people, at the right time, when users are most likely to convert.
• Real-time optimization. Digital advertising campaigns can be adjusted dynamically based on real-time performance metrics, including ad traffic, clicks, conversions, or engagement.
• Cross-channel reach. Best demand side platforms provide a unified buying environment as they support ads on web, mobile, video, social, audio, and connected TV.
• Cost efficiency. As DSP platforms use data to target only relevant audiences, they help reduce wasted ad spend and improve ROI.

Best Teams to Develop a Demand-Side Platform for You

The security and reliability of the software you use for programmatic advertising play a crucial role in ensuring consistent performance and trust. That’s why businesses prioritize partnering with tech agencies that can build the best DSP platforms tailored to the provided requirements. Such solutions can deliver transparency and campaign efficiency, which is crucial in the highly competitive digital ad world.

We invite you to take a closer look at the companies that you can rely on when you are planning to launch the best demand side platform:

• Geomotiv.
• Oxagile.
• Xenoss.
• Avenga.
• Intellias.
• Innowise.
• Asteriosoft.

Geomotiv

Geomotiv is a software development company headquartered in Alexandria, Virginia, with development centers in Europe. The company was founded in 2010, and since then, it has been gaining unique expertise in building custom solutions for AdTech, MarTech, OTT/CTV & Linear TV streaming, and other domains. Its team has worked with numerous businesses of all types and sizes, including industry giants like Pluto TV (owned by Paramount Global), MediaMath, Rubicon Project, and etc.

The company offers flexible cooperation models, and its experts are ready to join a project immediately, which will minimize the onboarding time and reduce the risks of delays. Over the years of work, Geomotiv has strengthened its iterative development approaches to deliver the best demand side platform on schedule. The team follows the Agile methodology, which ensures quick adaptation to changing requirements and clear alignment between stakeholders and engineers.

In the portfolio of the Geomotiv team, you can find a wide range of innovative AdTech solutions. One of them is a distributed DSP for in-game advertising. With this platform, the client managed to gain full control over all in-game advertising campaigns. It also helped decrease deployment time by 30%, while operational costs were reduced by 50%. You can read more here.

Oxagile

It is a custom software development company with more than 20 years of experience. Today, its team consists of 300+ professionals, while its offices are based in 8 locations across North America and Europe. Oxagile works with projects of different types, including video streaming, AdTech, business intelligence, real-time communication, and others.

The company offers its professional assistance in building DSPs and DSP aggregators from scratch. In addition to this, its team can be hired to modernize and enhance existing solutions. Your custom platform can be equipped with all the required tools for campaign management and audience targeting, as well as integrations with DMPs, third-party data, ad exchanges, BI tools, and analytics dashboards.

Xenoss

Xenoss positions itself as a specialized AI and data engineering company. With over a decade of experience, Xenoss helps enterprises develop, modernize, and improve their data stack, build AI products and tools. The team’s expertise covers various industries, including AdTech, MarTech, finance, logistics, and healthcare.

Among other tech-related services, Xenoss offers custom DSP development. Apart from building DSPs from scratch, the team offers help in DSP optimization, integration of data sources and third-party services, as well as implementation of AI and ML models for real-time bidding, audience targeting, and campaign management.

Xenoss enables faster and more efficient demand-side platform development through its proprietary AdTech framework. It comprises a comprehensive suite of ready-to-use components covering campaign management, bidding, tracking, and analytics.

Avenga

Avenga is a global IT consultancy and software engineering company that offers custom app development, digital transformation, cloud engineering, UX/UI design, and other tech-related services. The company provides various arrangement models, including project-based cooperation, team augmentation, managed services, and other flexible options for clients with different needs.

The company was created via numerous mergers and acquisitions, and is now part of a larger technology and innovation group, KKCG. Avenga has offices in many countries, which can help with time zone overlap and local regulatory compliance in regional markets.

The company designs and develops custom demand-side platforms, enhances existing DSP solutions with new functionality, and integrates them with supply-side platforms, ad exchanges, ad servers, and data management systems. Such solutions enable clients to maintain full control over media buying processes and maximize return on investment.

Intellias

Founded more than 20 years ago, Intellias is a global software engineering and digital consultancy firm. While the company works with clients from different domains, it has a strong focus on AdTech-oriented services.

For instance, it offers custom DSP development, including creation and integration of campaign management, bidding, reporting, and billing modules. The team also specializes in advancing AdTech strategies. Its expertise includes consolidating data from multiple sources, conducting comprehensive traffic and audience segmentation, as well as implementing data processing for real-time decision-making and analytics.

Moreover, businesses can turn to Intellias when they need to modernize their DSP platforms. The company’s experts can perform a software audit and introduce the required upgrades.

Innowise

This software development and IT consulting company was established in 2007. Today, it employs over 3000 IT professionals, including developers, business analysts, UI/UX designers, QA specialists, and DevOps engineers. Over the years of work, the company has delivered more than 1,300+ projects across 40+ domains.

AdTech is one of the sectors that the Innowise team specializes in. The company develops AdTech platforms that cover every segment of the digital advertising ecosystem. Its specialists can design and implement the technology that helps businesses achieve a wide range of goals, such as inventory monetization, optimization of campaign performance, and launching new tools.

Asteriosoft

Asteriosoft is a specialized software development company with over 18 years of experience in building custom AdTech solutions, including demand-side platforms, supply-side platforms, ad servers, and real-time analytics systems. The company has established a strong presence in the programmatic advertising industry and delivers scalable and high-performance platforms tailored to the unique needs of advertisers and publishers.

Asteriosoft provides end-to-end DSP development services that cover the full software development lifecycle, from initial consultation to deployment and ongoing support. Their platforms are engineered for scalability and enable businesses to expand and evolve in the AdTech ecosystem.

Quick Overview of the Best DSP Developers

In the table below, you can find the key benefits of the DSP advertising companies from our list.

How to Choose a Company to Build the Best Demand-Side Platform

When you are looking for a reliable tech partner, you can use our list of the best DSP development companies. But apart from this, we also encourage you to conduct your own market research and find professionals who will be able to address your business needs.

Here are our practical tips that will help you find the top DSPs development team.

• Look for proven experience in AdTech. Developers that you will work with should understand the peculiarities of programmatic ecosystems. Opt for a company with verified AdTech and MarTech backgrounds. Check its portfolio. It should include successfully launched RTB tools, DMPs, SSPs, display and video DSPs, and ad exchanges.
• Check the tech stack. Top DSPs should be able to deal with billions of requests per day. And all of them should be processed in milliseconds. To ensure this, developers should use the right stack, like high-load backend technologies (Go, Rust, Java, etc.), stream processing platforms and frameworks (Kafka, Flink, Spark), as well as scalable cloud infrastructure (Kubernetes, AWS, Azure, GCP).
• Verify integration experience. Modern DSP platforms should be smoothly integrated with major ad exchanges, like Google AdX and Magnite, third-party analytics platforms, as well as fraud detection tools. Your development team should be able to build and maintain custom APIs for future integrations.
• Look for full-scale services. The AdTech ecosystem quickly changes. And your DSP solution should align with all the ongoing needs and requirements. That’s why your tech partner should also be ready to provide ongoing tech support, performance monitoring, modernization, and feature upgrades.
• Try to find not just a development team, but a strategic partner. The hired custom software development team should act not as a vendor. It should become a co-creator. Such experts are deeply involved in your project. They are ready to offer business strategy insights and always stay proactive about new AdTech trends. With such a team by your side, you can be sure that your solution will be ready for scaling amid your business growth.

Final Word

The right choice of a DSP development partner is a foundation of your success in programmatic advertising. It doesn’t matter whether you are launching the best demand side platform or upgrading an existing solution, cooperation with a reliable development company can become your strong competitive advantage.

Leading DSP developers can build powerful, data-driven platforms that will deliver superior targeting and high digital ad performance. And that’s exactly what both advertisers and publishers are looking for.