Most organisations today run on some form of matrix structure. Decisions cross functional boundaries. Accountability is shared. Programmes depend on people who report to someone else entirely. And the leaders responsible for making it all work have no formal authority over the people they need most.
Jay Galbraith, the definitive authority on matrix organisation design, put it plainly: “Matrix organisations need people who can manage conflict and influence without authority.” That capability, leading effectively when the structure gives you responsibility without the power to enforce it, is what this series is about.
Research by the Centre for Creative Leadership makes the scale of the gap visible. Of senior executives surveyed across six world regions, 86 percent said that collaborating effectively across boundaries was extremely important in their current role. Only seven percent said they were very effective at it. That 79 percent gap is not primarily a skills problem. It is a mental model problem: most leaders bring hierarchical instincts to an environment that was never designed to be led that way.
This page is the hub for the Matrix Leadership series at andiroberts.com: twelve articles on how to lead effectively in lateral roles, grounded in research from Harvard Business School, the Centre for Creative Leadership, MIT Sloan Management Review, and the Project Management Institute.
What is a matrix organisation?
A matrix organisation is a structure in which people report to more than one manager simultaneously, typically a functional head and a project or programme lead. Rather than a single chain of command, authority is distributed across multiple dimensions: function, geography, product line, or business unit.
Galbraith identified three broad types of matrix structure, each with a different balance of authority. In a functional matrix, the functional hierarchy holds primary authority and project managers depend largely on persuasion and influence. In a balanced matrix, functional and project authority are roughly equal and shared. In a project or programme matrix, the programme holds primary authority and functions are largely in a supporting role. The leadership challenge in a lateral role is genuinely different across each type, and diagnosing which version of the matrix you are operating in is one of the most useful things a lateral leader can do early.
Matrices are adopted when organisations face two or more competing pressures that cannot be resolved by choosing one over the other: global scale and local responsiveness, functional depth and cross-functional speed, product innovation and customer intimacy. As Galbraith observed, the matrix is not a structure that resolves these tensions. It is a structure designed to hold them productively rather than suppress them.
What is matrix leadership?
Matrix leadership is the practice of leading effectively within a matrix structure, specifically in roles where you have responsibility for outcomes but no direct authority over the people you depend on to deliver them. It is the challenge of creating commitment, accountability, and direction across boundaries that the formal hierarchy does not cross.
Lateral leadership is the term used throughout this series for the specific capability required: leading horizontally rather than vertically, through influence, relationship, and shared purpose rather than through instruction and positional power. Research consistently shows that lateral leadership is one of the most underdeveloped capabilities in senior leadership pipelines, and one of the most consequential for organisational performance.
What organisations need to do: The conditions for matrix leadership to work
It is important to be direct about something that most matrix leadership resources omit: individual lateral leadership skill is only one part of the picture. Galbraith’s research is clear that matrix organisations succeed or fail depending on the alignment of five organisational conditions, not just the capability of individual leaders. His star model identifies these as strategy, structure, processes, rewards, and people. When any one of these is misaligned with the others, the matrix generates predictable failure patterns regardless of how skilled the lateral leaders within it are.
The most consequential misalignment is in rewards. If people are measured and incentivised purely on functional criteria, no lateral leader, however skilled, can overcome the structural pull towards functional self-interest. A cross-boundary commitment that competes with a functional performance target will lose, consistently and predictably, because the incentive system is more powerful than any individual relationship or programme commitment. Leaders who find themselves managing the same conflicts repeatedly, with different people in different forms, are often experiencing the symptoms of an incentive misalignment rather than a lateral leadership failure. The intervention required is structural, not relational.
Process misalignment produces similar symptoms: decision rights that are unclear at the points of greatest interdependency, escalation mechanisms that are too slow or too senior to be useful, and coordination processes that were designed for a simpler structure and have not been updated as the matrix has deepened.
The practical implication for a lateral leader is this: before investing heavily in developing your own capability, it is worth diagnosing whether the challenges you are experiencing are primarily leadership challenges or primarily structural ones. The self-diagnostic below is designed to help with that diagnosis.
Are your challenges leadership or structural? A quick diagnostic
Answer each question honestly. If most of your answers point to structural causes, the articles in this series will still be useful, but the most important intervention may be an organisational one that requires a different kind of conversation with senior leadership.
1. When a cross-boundary commitment slips, is the most common reason a competing functional priority rather than a lack of willingness? (Structural signal: incentive misalignment)
2. Do the same conflicts recur between the same functions in different forms, regardless of which individuals are involved? (Structural signal: boundary or process design fault)
3. Are decisions that should be made at programme level consistently escalated to senior leadership because nobody feels authorised to make them? (Structural signal: unclear decision rights)
4. Do cross-functional team members consistently say they feel caught between two sets of priorities with no clear guidance on how to resolve the tension? (Structural signal: dual accountability without clear resolution mechanism)
5. Has your organisation changed its matrix structure more than once in the last three years without the underlying collaboration challenges improving? (Structural signal: structure being redesigned when process, rewards, or people alignment is the actual problem)
If two or more of these resonate strongly, the articles in this series will help you lead more effectively within the current conditions. But the most valuable thing you may be able to do is name the structural issue clearly to someone who has the authority to address it.
The four capabilities of matrix leadership
The series is organised around a four-capability framework developed by Andi Roberts through three decades of work with senior and executive leaders in complex matrix environments. The four capabilities are the domains in which a lateral leader must build genuine capability because the matrix structure provides no substitute for them.
Influence is what replaces direction. In a matrix, a leader shapes others’ thinking and action through credibility, relationship, and genuine alignment with their interests, rather than through instruction. Influence without authority requires an understanding of what stakeholders value, what they need, and how the leader’s work serves those interests as well as their own programme’s.
Networks are what replace reporting lines. The deliberately built web of relationships across boundaries is the social infrastructure through which information, support, and cooperation flow in a matrix. Lateral leaders who invest in networks before they need them consistently get more cooperation than those who build relationships at the point of request.
Convening is what replaces the management meeting. The capacity to bring people together in ways that generate genuine ownership and collective commitment, rather than attendance and nominal agreement, is one of the most consistently underinvested capabilities in matrix leadership. Effective convening is the difference between a steering group that makes things happen and one that produces minutes.
Stewardship is what replaces positional accountability. A lateral leader who holds themselves accountable only for what their programme delivers is operating below the level the matrix requires. Stewardship is the orientation towards the whole system: a responsibility for what the organisation becomes as a result of the programme, not just what the programme produces.
The matrix leadership series: twelve articles
The foundations
What is a matrix organisation and why are companies adopting one?
Context and background for the series. Explains the shift from hierarchy to matrix, the benefits organisations are seeking, and the leadership challenges that reliably emerge. The central argument: the matrix succeeds or fails not at the structural level but at the leadership level.
How do I lead when I’m not the boss?
The foundation article. Introduces the four-capability framework and makes the case that lateral leadership is not a reduced version of hierarchical leadership but a genuinely different practice. The central argument: commitment, not compliance, is the only unit of currency available to a leader without authority.
The four capabilities: deep dives
How do I build influence across functions and departments?
A deep dive on the influence capability: credibility, trust, stakeholder interests, reciprocity, and gaining genuine commitment without authority. The central argument: influence is built through consistent service to others’ interests before your own, not through persuasion technique.
How do I build a powerful internal network?
A deep dive on the networks capability: social capital, boundary spanning, the roles of connectors, brokers, and energisers, and organisational network analysis. The central argument: the network is the infrastructure of lateral leadership, and it has to be built before it is needed.
How do I convene people who don’t report to me?
A deep dive on the convening capability: invitation, possibility, ownership, commitment, participation, and creating collective action. The central argument: effective convening is the difference between a group that attends and a group that owns.
How do I create accountability without authority?
A deep dive on the stewardship capability applied to accountability: making commitments visible, holding the system to account, addressing slipping commitments directly, and building accountability structures that outlast the leader. The central argument: accountability in a matrix cannot be assigned, it can only be created through clarity of agreement and structure.
Governance and practical challenges
How do decisions get made in a matrix organisation?
Decision rights, RACI, RAPID, escalation, and decision-making in complex organisations. The central argument: decision rights tell you who is allowed to decide; they say nothing about whether the decision will hold, and closing that gap requires the four capabilities, not a better process.
How do I manage competing priorities in a matrix?
Trade-offs, negotiation, prioritisation, resource conflicts, and managing multiple stakeholders. The central argument: competing priorities in a matrix are a negotiation problem, not a scheduling problem, and the tools that solve them are a principled basis for prioritisation and the willingness to surface trade-offs rather than absorb them.
How do I resolve conflict between departments?
Functional tensions, competing goals, collaboration breakdowns, and constructive conflict. The central argument: most inter-departmental conflict in a matrix is structural rather than personal, and resolving the condition producing it is more important than settling the current episode.
Advanced topics
How do I build trust across organisational boundaries?
Trust formation, credibility, psychological safety, and sustaining cross-functional relationships. The central argument: trust across boundaries is not the same as trust within a team; it is built differently, damaged differently, and repaired differently, and most lateral leaders invest in the wrong element at the wrong stage.
How do I lead through ambiguity and uncertainty in a matrix?
Sensemaking, adaptive leadership, navigating uncertainty, and creating direction when the answers are genuinely unclear. The central argument: ambiguity in a matrix is structural, not temporary, and the tools that work in complicated situations consistently fail in complex ones.
Synthesis
What do the best matrix leaders do differently?
A synthesis of the series and the research. Seven research-grounded behaviours that distinguish lateral leaders who get traction from those who get exhausted. The central argument: what separates the best matrix leaders is not a set of techniques but a fundamental shift from hierarchical to lateral thinking about authority, contribution, and what they are actually there to serve.
Three reader journeys
If you are new to matrix leadership and want to understand the fundamentals, start with What is a matrix organisation?, then How do I lead when I’m not the boss?, then choose whichever of the four capability deep dives is most relevant to your current situation.
If you are experienced in matrix roles but struggling with a specific challenge, go directly to the article that matches it: decisions, competing priorities, departmental conflict, trust, or ambiguity.
If you are developing others in matrix roles, start with What do the best matrix leaders do differently? for a research-grounded diagnostic framework, then use the individual deep dives as targeted development resources for specific capability gaps.
What the research says
The series draws on a substantial body of research. Several findings are particularly important to name directly.
Jay Galbraith’s forty years of research on matrix organisations produced the most important structural insight: matrix organisations do not fail because of poor structure, they fail because of poor implementation, and specifically because of misalignment between the five elements of the star model: strategy, structure, processes, rewards, and people. His research showed that incentive misalignment is the most common and most damaging cause of matrix failure, and that no amount of individual leadership skill overcomes a structural incentive pulling in the opposite direction.
Research by Ernst and Chrobot-Mason at the Centre for Creative Leadership, drawing on more than 2,800 respondents and nearly 300 interviews across six world regions, identified a 79 percent gap between how important senior executives said cross-boundary collaboration was and how effective they believed themselves to be at it. Their research identified specific boundary-spanning practices that distinguish effective from ineffective leaders at this level, including the creation of shared understanding across groups that would otherwise maintain incompatible private pictures of the same situation.
Research specifically on leadership behaviour in matrix organisations, published in the Project Management Journal, identifies five constructs that distinguish effective from ineffective lateral leaders: the capacity to empower rather than direct, quality of cross-boundary support, rigour of decision-making in ambiguous authority environments, flexibility to adapt rather than insist, and the communication discipline that creates clarity without relying on position.
Research on adaptive leadership identifies what is perhaps the most practically important distinction in the whole series: the most common cause of leadership failure in complex environments is treating adaptive challenges as though they were technical problems. In a matrix, where most significant challenges are adaptive rather than technical, this distinction determines how a leader spends their time and whether that time produces movement.
Research on organisational trust consistently finds that the three components of trustworthiness, the confidence that someone can deliver, that they genuinely care about your interests, and that they will behave consistently whether or not observed, do not develop at the same pace and require different actions to build, damage, and repair.
Frequently asked questions
What is the difference between a matrix organisation and a traditional hierarchy?
In a hierarchy, each person reports to one manager and accountability flows along a single chain of command. In a matrix organisation, people typically report to two managers simultaneously, usually a functional head and a project or programme lead. Authority and accountability are distributed across multiple dimensions rather than concentrated in a single line.
What are the different types of matrix structure?
Galbraith identified three main types. In a functional matrix, functional authority dominates and project managers depend largely on influence. In a balanced matrix, functional and project authority are roughly equal. In a project or programme matrix, programme authority dominates and functions are largely in a supporting role. The lateral leadership challenge is genuinely different in each, and diagnosing which type you are operating in is one of the most useful things a lateral leader can do early.
What is lateral leadership?
Lateral leadership is the practice of leading people who do not report to you. It is the capability required by anyone responsible for outcomes that depend on people over whom they have no formal authority: project managers, programme leads, cross-functional initiative owners, and many senior and executive leaders in matrixed organisations.
How do you build influence without formal authority?
Influence without authority is built through four consistent practices: understanding what stakeholders genuinely need rather than just what you need from them; investing in relationships before you need anything from them; demonstrating that you are oriented towards the organisation’s interests rather than just your own programme’s; and being reliable enough across all contexts that your reputation in the network is consistent with your behaviour in any individual relationship.
Why do matrix organisations fail?
Matrix failure has two distinct root causes that are often confused. Structural causes include misaligned incentives (people measured on functional criteria that conflict with cross-boundary commitments), unclear decision rights at points of high interdependency, inadequate integrating mechanisms, and process designs that were built for a simpler structure. Leadership causes include the application of hierarchical instincts to a lateral environment: trying to direct rather than influence, managing relationships bilaterally rather than creating shared maps, and addressing the presenting episode rather than the underlying structural condition. Both types of cause are real, and conflating them produces interventions that address the wrong problem.
What is the difference between commitment and agreement in a matrix?
Agreement is what happens in the room: a nod, a verbal confirmation, a decision record. Commitment is what happens after the room: a specific action, owned by a specific person, by a specific date, with a clear consequence if it does not happen. In a matrix, where no formal mechanism enforces agreement after the meeting ends, only genuine commitment produces delivery.
How do you create accountability without authority?
Accountability without authority is created through the quality of agreements rather than the weight of formal consequences. This means making commitments specific enough that both parties would describe them identically a week later; contracting explicitly for how competing demands will be handled before they arise; making commitments visible and tracked; and addressing slipping commitments directly and early rather than waiting for them to become a pattern.
What is the most common mistake matrix leaders make?
The most common and most costly mistake is treating matrix leadership as hierarchical leadership with the authority taken away, rather than as a genuinely different practice requiring different tools. This produces leaders who manage relationships at the episode level rather than the structural level, who try to resolve conflicts through relational intervention when the source is structural, and who invest in securing agreement when what they need is genuine commitment.
How do you make decisions effectively in a matrix organisation?
Effective decision-making in a matrix requires clarity on two things most decision frameworks provide only one of. The first is decision rights: who formally has the authority to decide. The second is decision power: who has the practical ability to make the decision real, regardless of formal role, and what is needed to win their genuine commitment rather than their nominal agreement. RAPID and RACI address the first question. Closing the gap between decision rights and decision power requires the four capabilities: influence, networks, convening, and stewardship.
How do you build trust in a cross-functional relationship?
Trust across organisational boundaries is built in three dimensions simultaneously: competence trust (can you deliver?), communication trust (will you share difficult information honestly and early?), and contractual trust (will you behave consistently whether or not you are being observed?). The most reliable accelerator is investing in all three before any need for cooperation arises. When trust has been damaged, the repair requires specific acknowledgement of what was broken, not simply a return to positive behaviour.
What is stewardship in the context of matrix leadership?
Stewardship in a matrix context means holding yourself accountable not just for what your programme delivers but for what the organisation becomes as a result of your work: whether relationships across boundaries are stronger, whether the group has developed shared habits of accountability, and whether the system you led is more capable because you passed through it.