By Anastasiia Lushyna
The AdTech industry keeps growing: the global AdTech market size was valued at over $876 billion in 2024 and is forecasted to grow from more than $986 billion in 2025 to over $2,547 billion by 2032.
This tendency illustrates the increasing demand for AdTech solutions: businesses across all industries rely on AdTech providers to drive income and remain competitive. However, this also means a growing supply. New AdTech companies regularly enter the market, making it challenging for organizations to select the right AdTech partner.
Operating in the industry since 2018, we know all the aspects of custom AdTech development from A to Z. This guide is here to help you bring your unique project to life – keep reading to explore the best custom AdTech development companies and discover how to make a choice.
Experience and technical capabilities are the key factors to pay attention to when choosing an AdTech development company.
At the same time, aspects like values and communication are important as well, especially if you are looking for long-term collaboration.
Building a custom AdTech product is a way to gain a competitive advantage.
Operating since 2018, Attekmi has vast experience in creating custom AdTech solutions and is ready to bring your unique project to life.
What are AdTech development services?
AdTech development is the creation of software and systems that enable and streamline the process of digital advertising. For instance, this can be a demand-side platform, an ad exchange solution, etc. The solution is built by your chosen AdTech partner.
The key steps involved in the custom AdTech development process are the same as with any other software. First of all, you must identify your objectives, project scope, budget, timeline, and technical requirements. Then, you need to conduct research and choose an AdTech partner. After everything is approved and the development process starts, you have to monitor progress.
Who needs these services?
While there are many ready-to-use and white-label options available on the market, custom AdTech development is the best choice for businesses that need a solution fully tailored to their needs, including design, functionalities, and other characteristics. Here are several examples:
Ad agencies that aim to offer additional services to their clients and reduce costs associated with third-party fees.
Enterprise-level advertisers or publishers who require custom solutions to gain greater control over the processes.
Startups that need to gain a competitive advantage and enter the market with a robust solution.
How to choose the right AdTech development partner
Among all the benefits of custom AdTech solutions, the main one is that you get a product created according to your specific requirements. Moreover, you own the technology and have full control over it.
However, it is essential to choose the right AdTech development company first. Here are the recommendations to consider after you identify your goals.
Pay attention to the experience
AdTech is a complex sphere, so look for a company that has experience with developing relevant solutions. For instance, if you need a demand-side platform, search for a partner who can prove their skills in terms of DSP development. Thoroughly review the portfolio and case studies.
Besides, consider your potential partner’s knowledge of industry trends and best practices.
Evaluate technical capabilities
Check if the team is proficient in programming languages and tools that are essential for the development of your solution. Obviously, you may not know all the aspects; however, the right provider will clearly explain how exactly they would build your software and justify their selection of technologies. If possible, also evaluate testing methodologies and deployment processes. Apart from this, find out what project management methodologies a provider follows and if they can adapt to your preferred approach (if necessary).
Assess communication and values
Communication plays a crucial role in any project’s success, so make sure to evaluate a potential partner’s style and responsiveness. How quickly do they reply? Are their responses complete? Is the partner proactive in terms of communication? What are their reporting mechanisms? Answering these questions is a must to ensure effective collaboration.
Besides, pay attention to the company’s culture and values – they should align with your own business.
Consider long-term collaboration
The right AdTech partner should provide ongoing support and maintenance – this will allow your software to remain effective, up-to-date, and, as a result, competitive. In addition, discover if the partner is able to adapt to changing requirements and solve unexpected challenges quickly.
Aim for transparency
Complete transparency is among the key requirements – this will help you prevent unpleasant consequences like hidden fees. Your potential AdTech partner must be transparent regarding pricing, timeline, and other conditions. For instance, instead of just specifying the amount of money required to bring your project to life, a company should provide you with a detailed pricing breakdown.
Look for reviews
Checking out case studies and testimonials available on the company’s website is a good start, but it is not enough. Look for reviews on credible sources like G2 or Clutch. Search for the information on the Internet. Your partner should have a solid reputation.
It would also be helpful to check if the company has any awards or certifications – this can help you make the final decision.
Top AdTech development companies in 2025
Above, you see a brief overview of the best custom AdTech development companies. Now, let’s review them in detail. Keep reading to discover the pros and cons of every business.
Attekmi
Attekmi is a leading AdTech company offering a wide selection of AdTech solutions and services. Apart from a range of ad exchange platforms that is able to meet any needs, you can count on custom AdTech development services. Attekmi is ready to build for you a demand-side platform (DSP), a supply-side platform (SSP), a data management platform (DMP), or any other AdTech solution you need.
Suitable for:
Businesses of all sizes that need a custom AdTech solution fully tailored to their needs
Pros:
Experience since 2018
Over 200 happy customers
Numerous awards
An individual approach to every client
Outstanding support service
Flexibility and scalability
Ease of integration
Cons:
AdTech solutions are complex, so it may take you some time to learn how to use your platform; however, the Attekmi team is always ready to help you
Pricing policy:
Depends on your requirements. Contact the Attekmi team to discuss your project
Sigma Software
Sigma Software offers development services for businesses in diverse industries, and AdTech is on the list. The list of solutions Sigma Software can create for you includes, but is not limited to, self-service platforms, data management platforms, and video advertising platforms.
Suitable for:
For businesses seeking custom and scalable AdTech solutions
Pros:
Among the world’s top 100 outsourcing providers
Stable and predictable delivery
Support and maintenance
A wide range of technologies: PHP, Python, Java, Angular, React Native, etc.
Cons:
Some reviews report project management difficulties
Pricing policy:
Contact Sigma Software to learn more
Intellias
Intellias is another reputable company offering AdTech development services. The business has experience in creating and customizing DSPs, SSPs, DMPs, ad exchanges, and private marketplaces.
Suitable for:
Businesses that need an experienced and proactive AdTech partner
Pros:
Modern frameworks and programming languages
Scalability and flexibility
Stability under high loads
Quick development of new functionalities
Cons:
Some reviews report occasionally missed deadlines
Pricing policy:
Contact Intellias to learn more about pricing
Avenga
Avenga delivers AdTech and MarTech development services and specializes in creating DSPs, SSPs, ad exchanges, CRM systems, etc. Avenga’s team builds real-time bidding and programmatic platforms for such channels as display, native, in-app mobile, video, audio, CTV, OTT, in-game, and DOOH.
Suitable for:
Businesses searching for a custom digital advertising, data management, or marketing automation solution
Pros:
Over 200 completed projects
Compliance with data regulations
Expert support
Experience in AI and machine learning
Cons:
Some reviews report challenges with documentation
Pricing policy:
Get in touch with the Avenga team to learn more
Innovecs
Innovecs offers a wide selection of services, one of which is software development and engineering. In terms of AdTech, Innovecs offers the development of DSPs, SSPs, real-time bidding exchanges, and targeting and retargeting software.
Suitable for:
AdTech companies, publishers, and media agencies that need a custom solution to enhance their businesses
Pros:
Over 150 happy customers
Scalability
Enhanced security
Ongoing support and maintenance
Cons:
Some reviews report challenges with the recruitment speed
Pricing policy:
Contact Innovecs to discuss your project and estimate expenses
Matellio
Matellio also offers diverse solutions for a wide range of industries: banking, retail, healthcare, travel, and others. As for AdTech, you can request a mobile application, a DSP, an SSP, or an agency trading desk. Some key features that you may need are real-time bidding, data automation, an AI-powered dashboard, and multi-platform support.
Suitable for:
Media companies and agencies that are looking to build a custom solution for their needs
Pros:
A range of engagement models to choose from (dedicated development, turnkey, etc.)
Post-launch maintenance
Adaptable and responsive team
The company may also develop new features for your existing AdTech software
Cons:
According to some reviews, the quality assurance processes could be improved
Pricing policy:
Get in touch with Matellio to learn more.
BairesDev
The next company on our list of best AdTech development services is BairesDev. Delivering value to a wide range of industries, the company also offers custom advertising software solutions. The selection of services includes AdTech solutions development, mobile app development for advertising, cross-device advertising solutions development, and so on.
Suitable for:
Businesses across diverse industries and niches as BairesDev goes beyond traditional AdTech platforms like DSPs or SSPs
Pros:
A wide selection of advertising development services
Access to over 100 technologies: React, PHP, Java, etc.
Transparency in recruitment
Flexibility and adaptability
Cons:
Some reviews report challenges with cost management
Pricing policy:
Contact BairesDev to discuss your project
Postindustria
Postindustria offers a wide range of AdTech development services, and here are some solutions that you can count on: a custom header bidding platform, Prebid server development, Prebid.js development, custom Prebid mobile SDK development, and so on.
Suitable for:
Media owners and companies that strive to maximize revenue while shortening the time to market
Pros:
A team of over 30 AdTech experts
Scale-ready infrastructure
Flexible SLA for every partner
Proactive approach to problem-solving
Cons:
The average hourly rates are higher than those of other companies mentioned on this list (according to Clutch)
Pricing policy:
Get in touch with the Postindustria team to estimate the expenses
Xenoss
The last one on our list of businesses offering top AdTech development services is Xenoss, a specialized AI and data engineering company. There are loads of tasks and solutions you can entrust Xenoss with, and here are only some of them: SSP, DSP, and ad network development, CTV and OTT advertising platforms, programmatic DOOH advertising solutions, ad fraud detection and prevention software, custom advertising solutions for publishers, AI-powered solutions, etc.
Suitable for:
Advertisers, publishers, agencies, and AdTech providers searching for ways to enhance their operations
Pros:
Recognized among the top 100 software companies on the Inc. 5000 list
A wide range of available services
An impressive technology stack: JavaScript, Python, Django, etc.
Quick delivery
Cons:
According to some reviews, the company is very collaborative but sometimes less responsive
Pricing policy:
Contact Xenoss to discuss your requirements and learn more about pricing
Why custom AdTech development is a smart move
Getting a custom AdTech solution offers multiple benefits for businesses, and here are the main ones.
Complete control over the functionalities
Even though there are plenty of ready-to-use solutions available, choosing one of them can be a challenging and time-consuming task. Some platforms may lack the functionalities you need, while others may have features that you do not require. Sometimes, choosing a white-label platform can help overcome this challenge, as certain options (like our White Label Ad Exchange) imply not only UI personalization but also custom on-request feature development. However, when your solution is built from the ground up, you have full control over everything, including functionalities and the roadmap. You get a product developed according to your requirements and aligned with your business goals. In addition, you own the technology and the intellectual property.
Competitive advantage
Unique functionalities and technology ownership result in another advantage of custom AdTech software development – you gain a competitive advantage. Building a custom platform can help you differentiate your business from its rivals and ensure an even more consistent digital presence. Besides, that is a way to enhance your brand image and credibility. For instance, offering a unique and branded demand-side platform to your clients is a more effective approach than helping them launch their campaigns via a third-party system.
Cost reduction
Obviously, a custom project may require significant investments, especially in the case of a complex AdTech ecosystem. However, in the long run, this implies cost-effectiveness. For example, if your operations imply high media spend, using your own technology for advertising can reduce or even eliminate fees and commissions associated with third-party platforms. Besides, thanks to custom functionalities, you can get an opportunity to allocate your budget and optimize ad spend more effectively.
Enhanced scalability and flexibility
Custom solutions are often easier to scale, so such a platform will grow along with your business, handling increasing traffic and data volume and ensuring smooth expansion.
Apart from this, custom development is all about flexibility. First of all, your AdTech partner should be able to adapt the solution to your changing requirements, if necessary. Secondly, in the AdTech environment, it is essential to keep an eye on emerging trends and technologies. If some of them turn out to be relevant to your business, you will face no difficulties with updating your custom platform accordingly. In turn, with a ready-to-use system, this is often impossible.
Easier integration
Modern AdTech platforms tend to offer advanced integration capabilities, but you may still need something special to ensure flawless operations. In the case of custom product development, your solution is seamlessly integrated with your existing systems and workflows. In addition, you can request additional integrations when clarifying your project to your AdTech partner. For instance, you may need specific traffic and demand scanners to ensure ultimate security.
Keep in mind that the success of your project and, as a result, access to most of the benefits, highly depend on your choice of an AdTech provider. With the right partner, you will be able to make the most of your solution and reach your objectives in an effective manner.
Consider Attekmi your trusted partner
At Attekmi, we offer a wide range of ad exchange solutions, from an entry-level platform with basic functionalities to a fully customizable option. But that is not all. Offering custom AdTech development services, we are ready to help you bring your business to the next level.
Why choose Attekmi? Here are the main reasons to pay attention to:
Operating in the industry since 2018, we have extensive experience with creating effective and profitable AdTech platforms. For instance, StreamKey, one of our partners, achieved 1637% ROI and doubled its revenue. You can reach the same heights or even greater results.
So far, we have gained the trust of more than 200 partners and earned multiple awards (including those acknowledging our ultimate customer support).
Our expertise goes beyond ad exchange development: we can create any AdTech solution you need, including supply-side platforms, demand-side platforms, data management platforms, etc. Provide us with your requirements, and we will bring your project to life.
We build your solution according to your needs and continuously collect your feedback. As a result, you get an AdTech system fully tailored to your requirements.
We approach every partner individually and come up with a unique strategy for each of them.
At Attekmi, we strive for ultimate flexibility. We are always ready to adapt to your changing requirements and provide you only with the best custom AdTech solutions.
We will keep your product effective and up to date – there is no need for you to worry about maintenance.
Our team guides you all the way through. Starting from the initial consultation, our support never ends. Besides, you can request Ad Ops outstaffing services. We can train an expert specifically for your business. In turn, you will be able to focus on your core processes and goals while your operations run smoothly.
Your solution will integrate into your processes seamlessly – just as if it has always been there.
We consider each of our clients a partner. You can count on a long-lasting and mutually beneficial collaboration.
FAQ
Custom AdTech development services imply creating a solution from the ground up according to your needs by the selected AdTech partner. This can be a demand-side platform, a supply-side platform, an ad exchange, an ad server, etc.
The key factors to pay attention to are years of experience, technical capabilities, communication style, business values, and transparency. Consider long-term collaboration when making a choice, and look for reviews on reputable platforms.
The main benefits of building an AdTech solution from scratch are complete control over functionalities, cost reduction, full ownership, enhanced flexibility and scalability, and easier integration. In addition, you get a competitive advantage.
