How agency consolidation is changing the game for CMOs

Agency consolidation is rapidly transforming traditional marketing

Omnicom’s acquisition of Interpublic Group (IPG) sent a clear signal: the marketing industry is reshaping itself around scale, integration, and control of technology. This isn’t just about creating the biggest company; it’s about redefining how brands connect with consumers in an era driven by automation and data. Traditional agencies built around service fees and billable hours are losing leverage. Technology platforms now own the customer data, automation tools, and feedback loops that once differentiated agencies.

Executives at companies like Publicis and WPP understand this. Publicis doubled down on integration with its “Power of One” model, while WPP is merging its data and media operations under GroupM Nexus to create unified, data-driven offerings. The message is simple: being large isn’t enough, owning the systems that drive efficiency, insight, and speed now defines competitiveness.

For leaders, this transition forces a new kind of strategic thinking. It’s not just about hiring creative talent or managing ad spend anymore. It’s about ensuring your marketing ecosystem is aligned with technology that keeps you close to real-time consumer behavior. If you outsource everything, you may save cost today, but you risk losing control tomorrow. The agencies that thrive will be those that understand that marketing’s future lies in operating as technology platforms, integrated, data-rich, and powered by automation.

Most holding companies have had declining share prices since their 2021–2022 peaks. That pressure is catalyzing transformation at pace. The outcome will reshape the global marketing economy: fewer holding companies, more unified operations, and a relentless focus on measurable outcomes rather than creative subjectivity.

Agencies are shifting from offering advertising services to owning the infrastructure

The core business model of major agencies is being rewritten. Instead of charging by the hour or by media volume, they aim to own the infrastructure, data systems, AI tools, workflow software, and proprietary media inventory, that powers marketing itself. Five dimensions define this new model: fixed pricing tied to business outcomes, deep use of automation to lift efficiency, proprietary targeting and analytics platforms for monetizing data, bundled media solutions integrating content and tech, and direct control of audience data. These shifts allow agencies to turn what were once services into products and ecosystems that clients depend on daily.

For executives, this is more than an operational shift, it’s a power shift. When agencies own the systems your team relies on, they become part of your technology stack, not just your extended workforce. The advantage is speed, integrated insight, and access to new tools. The risk is dependency. Deciding where to draw that line is the strategic challenge.

Executives who want to maintain strategic flexibility should map which functions create long-term competitive advantage and which deliver short-term efficiency. Some companies prefer agency tools for quick deployment and scale. Others are building in-house stacks to control data, experimentation, and consumer insights end-to-end.

This trend is also transforming agency economics. Proprietary AI and data tools increase margins while offering predictability for clients. It’s no longer about buying ad space; it’s about buying access to optimized systems that control audience engagement flows. Leaders at companies like Publicis and WPP are moving in the same direction, creating platforms, not portfolios. This is where value will concentrate over the next decade.

The decision for CMOs is no longer “which agency to hire,” but “which infrastructure to build upon.” Those who act early, owning key technologies and retaining control over insight-driven data, will set the pace for how marketing delivers value in a networked, automated world.

Agency consolidation introduces complexities and risks that may counteract perceived benefits

Agency consolidation advertises simplicity, one partner, one team, one contract. In reality, this often brings new layers of complexity. Even when agencies merge, internal divisions, legacy systems, and competing commercial incentives tend to remain. A CMO might find that what was promised as integration turns into constant internal coordination across multiple agency subsidiaries, all under the same holding company umbrella. What looks seamless externally can feel fragmented operationally.

For executives, the main concern is control. As agencies stack services and add proprietary tools, the client’s control over data, workflow, and brand strategy can subtly erode. Several forms of “lock-in” are emerging as real structural risks:
– Workflow lock-in, where agencies manage the entire marketing pipeline, from creative briefs to analytics, making transitions costly and time-consuming.
– Data lock-in, as agencies deepen investment in proprietary audience datasets and identity graphs that brands cannot easily replicate or remove.
– Technology lock-in, where integrated tools for AI, campaign management, and measurement tie brands to specific platforms.
– Strategic lock-in, where agencies influence brand direction so heavily that internal teams lose strategic depth.

Executives need to assess these dynamics early, before contracts are signed and systems embedded. Integration can create useful efficiency, but cost transparency and operational independence must remain top priorities. The way to manage this is to define governance boundaries clearly. The agency’s tools may drive speed, but core brand processes, data standards, and decision-making logic must stay in-house.

The growing complexity does not make consolidation inherently negative, but it demands stronger oversight and architectural thinking at the CMO level. In this environment, the real power doesn’t come from consolidation itself, it comes from knowing exactly where consolidation should stop.

CMOs need to strategically delineate which marketing functions and assets

Marketing used to be about executional efficiency; now it’s about ownership of key inputs, data, platforms, and insight engines. Today’s leading marketers aren’t outsourcing to save money, they’re outsourcing strategically while retaining control of their decision-critical layers. This is the shift that defines the next generation of marketing leadership.

Data must be treated as a control point. The company that owns its customer data owns its insight velocity, its ability to personalize, and its ability to adapt. Agencies can add value through analytics and modeling, but leaders should make sure that underlying data ownership, classification, and integration stay within the enterprise. Transparency is gained when data systems align with internal governance and compliance frameworks.

Technology and AI integration require similar precision. Agencies can provide automation platforms and experimentation tools, but executives must determine which of those should stay fully internal. Having the core marketing platforms built or hosted in-house helps protect institutional knowledge and operational resilience. The goal is not to reject external support but to manage it with architectural discipline.

Process and analytics ownership require clear definitions. Agencies should enhance reporting and optimization. When brands rely too heavily on agency-generated ROI measurement frameworks, they risk biased visibility into performance. Internal analytics teams must maintain authority to calibrate and interpret metrics.

For global marketing organizations, the choice is not about whether to control versus outsource, it’s about designing modular systems of collaboration. Control what differentiates you; outsource what scales better elsewhere. The most successful CMOs will manage this balance as a continuous process, refining what they own as technology, data, and AI evolve at exponential speed.

A set of six strategic moves can guide organizations in effectively navigating the era of agency consolidation

The consolidation wave is not slowing down, and companies cannot afford to respond reactively. CMOs and senior leaders need a defined framework to structure how they collaborate with increasingly integrated agencies. Six strategic moves can set the foundation for clarity, control, and performance.

First, define your internal operating model before aligning with an external partner. Many global consolidation efforts fail because the client’s internal structure is still in flux. A clearly outlined model, covering workflows, roles, and decision ownership, allows the agency to integrate without creating confusion or duplication. Leaders must be explicit about how paid, owned, shared, and earned media will connect, and where regional or global authority sits.

Second, decide what to integrate and what to keep modular. Full integration is beneficial for certain areas, measurement, data pipelines, and workflow systems, but not all. Creative excellence, brand voice, and cultural expression perform best when teams maintain some autonomy. Executives should centralize where efficiency gains are clear but allow flexibility for differentiation and innovation where it matters most.

Third, evaluate agency technology with the rigor used for enterprise software. Agencies are pitching more proprietary tools than ever, from AI planning systems to performance measurement platforms. Treat these as you would any investment in core infrastructure. Assess how they integrate with existing ecosystems, identify data portability limitations, and ensure cost transparency. Never assume the technology belongs solely to the agency; define ownership and rights early.

Fourth, codify ownership and portability in writing. This is a governance discipline. Contracts should specify who owns the data, the models, and the documentation. Ensure the ability to export, replicate, or transfer systems without friction. It prevents operational paralysis if a partnership ends or needs reevaluation.

Fifth, build an internal marketing operations engine. Agencies can lead execution, but the enterprise must still orchestrate. Establish internal teams that manage workflow design, data standards, identity management, and performance oversight. A lightweight but capable internal integration team ensures strategic alignment while keeping decision-making close to the business.

Sixth, move to outcome-based pricing guided by balanced performance metrics. Link compensation to results but avoid oversimplifying performance into short-term metrics. The pricing model should incorporate growth outcomes, operational efficiency, and brand health indicators. When done right, this aligns incentives without encouraging myopic or short-lived gains.

For executive leaders, these steps translate into structural resilience. Agency consolidation changes how business value is created across marketing ecosystems. By grounding partnerships in internal clarity, technological assessment, and contractual precision, leaders can capture the upside of scale and integration without giving up adaptability or insight control.

The experiences of Omnicom, IPG, Publicis, and WPP show the direction of travel: large, technology-driven ecosystems competing to be the core operating platform for brands. The companies that succeed in this environment will be those that know how to partner deeply while never losing sight of what must remain under their own command.

Key takeaways for leaders

• Agency consolidation reshapes marketing control: The largest holding companies are transitioning from service providers to technology-driven platforms. Leaders should reassess partnerships to ensure operational control and data ownership remain with the brand, not outsourced entirely to agencies.
• Agencies now own more of the marketing infrastructure: With agencies building proprietary systems and AI-powered tools, future value lies in controlling these underlying platforms. Executives should determine which functions to keep internal to maintain agility and protect long-term strategic advantage.
• Integration comes with structural lock-in risks: Consolidation promises simplicity but often increases dependency through workflow, data, and technology lock-in. CMOs should define clear governance boundaries to maintain flexibility and cost transparency within multi-agency ecosystems.
• CMOs must define what stays in-house: Data, AI, and analytics are no longer optional to own, they are strategic assets. Leaders should keep these functions internal while outsourcing executional tasks to preserve insight control and safeguard competitive differentiation.
• A structured playbook ensures balance and autonomy: Six key moves, defining internal models, deciding what to integrate, vetting technology, codifying ownership, building internal operations, and adopting outcome-based pricing, create sustainable control. Executives should implement this framework to capture efficiency without losing strategic independence.