Digital advertising matters now because it’s being pulled in two directions at once: commerce is becoming the default buying journey (in the US, Q3 2025 retail e-commerce sales were USD 310.3B and 16.4% of total retail sales). Moreover, digital reach is still expanding (ITU revised its estimate to 5.8B people online in 2024, ~71% of the world).

Despite these trends, advertisers are simultaneously losing easy tracking signals and being forced to prove incremental value. In that context, the category’s center of gravity is shifting from “buying impressions” to owning data, measurement, and automation.

Commerce-led growth (EU enterprises generated 19.12% of turnover from online sales in 2023 and 77% of people bought online in 2024) plus signal loss is pushing budgets toward channels that can prove outcomes. This means spend is concentrating in retail media (already 370+ companies / ~115,200 employees according to our data), agentic automation for search and reporting, and privacy-first measurement (incrementality, modeling, clean rooms), backed by broad capital (35k+ investors) and steady innovation (~2K patents; 2.85% patent growth).

 

 

From USD 650B to  USD1.59T: Digital Advertising Scales on Performance, Platforms, and Automation

The global digital ad spending market is forecast to grow from USD 650 billion in 2025 to about USD 1,593 billion by 2035 (CAGR 9.38%), reflecting sustained demand for digital marketing technologies, data-driven advertising, and platform-based engagement models.

 

 

 

Search advertising remains a dominant format, around 30% of worldwide web traffic is generated through search engines each year. Meanwhile, mobile advertising continues to expand as more and more users access the internet via smartphones and tablets.

Against this backdrop, StartUs Insights’ data shows a large and active operating base heading into 2026: ~18 000 companies across the digital advertising value chain, including 7365+ startups, with 6.29% yearly growth.

The workforce totals ~579.8K+ professionals globally, while market activity clusters in major commercial and tech hubs. Country leaders include the USA, India, the UK, Canada, and Turkey.

Innovation is steady, with companies holding ~2 000 patents and securing 420+ grants; patent activity includes ~1600 applicants, 2.85% yearly patent growth, and geographic concentration led by the USA (1135+ patents) with South Korea (285+ patents) as a secondary center.

Where Ad Tech is Heading: 5 Startups to Watch

Crumbless – Autonomous Search Ads Agent

UK-based startup Crumbless develops Chip, an autonomous AI agent for managing Google search ads campaigns. It connects directly to a Google Ads account, analyzing a brand or product URL to build a contextual persona.

Further, it maps audiences to high-intent keywords, generates ad groups and headlines, and continuously optimizes bids and budgets in real time.

Additionally, the agent scans news sources, social feeds, and publications to align campaigns with current trends, while offering both fully autonomous execution and a co-pilot mode for guided control.

As a result, it reduces manual campaign management, maintains brand-aligned ad copy, and reallocates spend toward higher-performing keywords.

Mindmetrics – AI Advertising Intelligence

French startup Mindmetrics offers advertising intelligence by unifying cross-platform media data into a single analytical model. It connects to advertising and analytics platforms such as Google Ads, Meta, TikTok, DV360, and GA4 through official APIs.

Further, it standardizes disparate metrics in real time and applies AI agents that analyze performance variations, detect anomalies, and interpret results using advertising and business logic.

Moreover, it enables one-click analyses, automated reporting, interactive AI-driven queries, and dashboard generation without storing raw advertising data to ensure data control and reliability.

As a result, it replaces fragmented dashboards and manual reporting with a consistent, explainable view of media investments.

Vaudit – AI Ad Billing Audit Engine

US-based startup Vaudit provides an AI-powered ad billing audit engine for Google Ads. It connects to ad accounts with read-only access to audit historical click and billing data against platform policies.

Also, it detects overcharges and discrepancies, and automatically files verified refund claims. Further, the engine credits refunds directly back to the advertiser’s account while providing clear visibility into sources of wasted spend through a real-time dashboard.

Thus, it removes manual audits, reduces financial risk through a pay-on-success model, and returns unclaimed advertising credits.

Ad-Yo – Blockchain Ad Targeting

French startup Ad-Yo develops an open-source blockchain protocol for anonymized digital ad targeting and transaction verification. It allows customers to create verified profiles with encrypted personal data stored locally on their devices.

Likewise, anonymized hashes, ad views, and transactions are recorded on the blockchain and linked to dynamic NFTs that evolve with user interactions.

The protocol enables advertisers to run targeted campaigns based on accurate, consent-based data, executes impression-level transactions directly between advertisers and customers through smart contracts, and distributes rewards transparently using stablecoins and tokenomics.

As a result, it ensures authentic ad views, preserves user confidentiality, and removes intermediaries from the advertising value chain.

Sprybe Technology – Digital Signage Management

Indian startup Sprybe Technology develops a cloud-based digital signage management platform for centralized content delivery and device control.

It enables organizations to connect displays to a single command center where devices, media, subscriptions, and analytics are managed remotely. Also, the platform ensures that the content is downloaded locally to screens and played according to schedules, even during offline periods.

Moreover, the platform supports device grouping, role-based access, design editing, media libraries, video encoding, point of sale (POS) integration, APIs, and third-party app integrations, alongside detailed performance analytics and security controls.

Thus, it simplifies large-scale screen operations, reduces manual intervention, and improves visibility into content performance and device health.

Where Digital Advertising Is Moving: Top Trends

Innovation in digital advertising is shifting from pure scale toward execution advantage: Automation, measurable performance, and formats that sit closer to commerce outcomes, while IP activity remains steady enough to signal ongoing, incremental productization across the stack.

We hand-picked three digital advertising trends set to impact the industry in the coming years:

Augmented Reality Advertising represents an emerging but fast-growing niche within digital advertising. Our database recorded 115+ companies operating in this segment, employing approximately 2200 people globally.

Despite its relatively small workforce, AR advertising records a strong annual growth rate of 9.49%. Brands are leveraging AR to create immersive, interactive ad experiences that enhance engagement and product visualization.

Programmatic display advertising remains one of the fastest-growing and most technologically advanced segments of the digital advertising ecosystem. The segment includes more than 145 companies, with a combined workforce of around 12 600 employees.

The sector highlights an annual growth rate of 10.77%, driven by increased automation, real-time bidding, AI-driven targeting, and demand for measurable advertising performance. The data indicates a mature but continuously evolving segment, where innovation focuses on efficiency, transparency, and optimization rather than workforce expansion alone.

Retail media networks are home to 370+ companies employing approximately 115 200 people globally. Over the last year, ongoing expansion across retail and eCommerce ecosystems could be observed.

The annual growth rate of 6.27% points to stable, sustained growth rather than rapid acceleration. Retail media networks benefit from first-party data, closed-loop attribution, and direct access to consumers at the point of purchase.

 

 

 

Investment Signals: What the Ecosystem is Building Next

Investment activity in the digital advertising industry reflects a well-capitalized and broadly supported market. The average investment value stands at USD 23.6 million per funding round according to our data, which indicates balanced capital deployment across early-stage, growth-stage, and scale-up companies within the ecosystem.

Google continues to lead global internet companies in digital advertising revenue. The search giant is projected to generate around USD 340 billion in ad revenue by 2027, while accounting for approximately 40% of worldwide digital advertising spend.

Investor participation is extensive, with more than 35 000 investors actively backing digital advertising companies. This wide investor base underscores strong confidence in the sector’s long-term relevance and its role in enabling data-driven marketing, customer engagement, and digital commerce.

In total, over 3400 funding rounds have been closed, resulting in investments across more than 945 companies. This dispersion of capital suggests that funding is not limited to a small number of dominant players but is instead distributed across a diverse set of startups and established firms.

The combined value invested by top investors exceeds USD 3.63 billion according to the Discovery Platform, showing concentrated capital deployment across major digital advertising innovators.

How We Scoped the Digital Advertising Market

This digital advertising outlook is built on proprietary data from the StartUs Insights Discovery Platform, which tracks ~9M companies, 25K+ technologies and trends, and 150M+ patents, news articles, and market reports.

For this report, we analyzed the last five years of market signals across ~18 000 digital advertising companies (including 7365+ startups) and tracked momentum through news activity, workforce indicators, innovation activity, and capital flows, complemented by external market sizing and channel data.

The near-term outlook is shaped by a shift from reach-first buying to proof-first execution: budgets are moving toward channels and stacks that can operate with first-party data, deliver auditable performance, and support privacy-safe measurement, while AI-driven automation increasingly compresses the time and cost of campaign operations.