The Difference Between Advising and Implementing

The most fundamental distinction between the two roles lies in the nature of responsibility. The management consultant offers the organisation a roadmap. They analyse the current situation, evaluate alternatives, recommend the most suitable strategy, and present this recommendation to the organisation's decision-makers with sound reasoning. The consultant's core product is knowledge: analysis, foresight, and advice. Implementing the recommended path is, in most cases, left to the organisation's own teams and leadership. This model is extremely valuable in situations where the organisation has a strong implementation capacity and clear leadership; because the organisation clarifies its own path with an expert view from outside and walks that path with its own strength.

The interim manager stands at a different point. Their product is not merely advice, but the result itself. The interim manager actually assumes a role within the organisation's management layer, makes decisions, directs the team, and carries the responsibility for implementation directly. In other words, while the consultant says "what should be done," the interim manager "does what needs to be done themselves." This difference takes the interim manager out of being an observer and recommender, and makes them a direct part of, and responsible for, the process.

This distinction may seem like an abstract conceptual difference, but in practice it produces highly concrete results. If an organisation needs to clarify its strategic direction, management consultancy is the most appropriate solution. However, if the strategy is already clear and the real need is the leadership capacity to bring it to the field, interim management comes into play. We examined in detail which scenarios push this decision in which direction in our article on when a senior interim executive steps in.

Another important dimension of this difference concerns the ownership of responsibility. In a consulting relationship, the success or failure of the recommended strategy depends largely on how the organisation implements that strategy; the consultant is not directly responsible for the outcome of implementation. In interim management, on the other hand, responsibility belongs directly to the interim manager; they assume both the strategy and the implementation, and answer directly for the result. This ownership of responsibility becomes decisive in some critical processes; because the organisation needs not merely advice, but a leadership that will guarantee the result.

Management Consulting: Decision Criteria

To make the right choice, the situation the organisation faces should be assessed across several fundamental dimensions. This assessment must rest not on a superficial impression, but on an honest analysis of the organisation's real need. The following criteria offer a useful framework for clarifying the choice between management consultancy and interim management:

•     Whether the problem is defined: If the organisation does not fully know what it is facing and first needs to understand the situation, the analytical strength of management consultancy comes to the fore. If the problem is already clearly defined and the real need is implementation, interim management is more suitable. This distinction is often directly related to how clear a view the organisation has of its own situation.

•     The presence of implementation capacity: If the organisation has the internal leadership capacity to bring the proposed solution to life, the consultant's roadmap may suffice. Where this capacity is lacking, the interim manager carries both the strategy and the implementation. Many organisations, despite having a strong strategy, cannot progress because of the lack of leadership capacity to bring it to the field.

•     Ownership of responsibility: In some critical processes, a leader who will actually assume responsibility for the result must be positioned within the organisation. This does not fit the nature of a consulting relationship; it falls within the domain of interim management. Having a direct owner of the result becomes a critical requirement, especially in high-risk processes.

•     Time pressure: In situations where decision and implementation must progress simultaneously and rapidly, interim management — which removes the gap between analysis and execution — provides an advantage. The handover process between consultancy and implementation often leads to valuable loss of time; interim management eliminates this loss.

When these criteria are assessed together, a single clear answer is often reached. Yet corporate reality does not always operate with such sharp boundaries; in many situations, the strengths of both approaches are needed at the same time. For this reason, when evaluating the criteria, one should ask not only "which one?" but also "in what proportion both are required." This more nuanced view often leads to the most effective solution.

The correct assessment of decision criteria also requires the organisation's own internal honesty. Some organisations overestimate their implementation capacity and therefore assume that a consulting report will be sufficient on its own; yet the report remains worthless without the capacity to bring it to life. Conversely, some organisations turn directly to an implementation leader without having strategic clarity; in this case, the interim manager has to disperse their energy without a clear direction. The right choice begins with an honest assessment of the organisation's own situation.

Where the Two Approaches Meet

Viewing management consultancy and interim management as alternatives to one another is often an incomplete perspective. A mature corporate approach positions these two roles as complementary forces. In many complex processes, direction is first set through strategic analysis; then an interim leadership steps in to bring that direction to the field. Here, the consulting phase draws the path, and the interim management phase actually walks it. The complementing of these two phases brings together both the analytical depth and the implementation determination of the solution.

The greatest strength of this integrated approach is that it removes the disconnect between strategy and implementation. In the traditional model, a comprehensive report prepared by a consultant is often forgotten in a drawer, because the capacity or determination to implement it is lacking. This disconnect causes a large part of the consulting investment to go to waste. The involvement of interim management closes this gap and ensures that the strategy does not remain merely on paper. Thus, the organisation obtains both the value of the strategic analysis and the concrete results of implementation.

At this point, it becomes decisive that the interim manager also carries strong analytical and consulting expertise. The most effective interim managers are not only implementers, but leaders who can also think strategically. When they join the organisation, they first diagnose the situation rapidly, then turn their own diagnosis into action. This combined competence is among the foremost factors making interim management increasingly valuable in today's business world. An interim manager carrying both analysis and implementation capacity within themselves resolves the traditional distinction between consultancy and implementation internally; this, in turn, makes the process faster and more consistent.

We deepen how this combined competence reflects on organisational restructuring processes in our article on the consulting approach in organisational restructuring. Processes such as restructuring, which require both a comprehensive analysis and a determined implementation, show most clearly the value of the approach in which consultancy and interim management are integrated. In such processes, the experience that performs the analysis also managing the implementation ensures full consistency between design and implementation and significantly increases the probability of the process's success.

The Way to Make the Right Choice

Making the right choice between management consultancy and interim management is possible not only by knowing the difference between the two roles, but by the organisation defining its own need correctly. The first step of this process is to analyse the situation the organisation faces honestly. Is the problem clear, or does it first need to be understood? Is the organisation's implementation capacity sufficient, or lacking? Is a direct owner of the result needed? The answers to these questions largely determine the right type of solution.

The second step is structuring the solution correctly from the outset. If the need is a consultancy, it should be ensured that the organisation has the capacity to bring this analysis to life; otherwise, even the best report remains inconclusive. If the need is an interim management, the interim manager should be granted a clear task definition and genuine decision-making authority; because the interim manager's value stems from assuming responsibility directly, and this responsibility is proportional to the authority. This structuring directly determines the probability of the solution's success.

The third step is designing the solution flexibly. In many situations, the organisation's need evolves over the course of the process. A situation that looks at the outset like a need for analysis may later require strong implementation leadership; or vice versa. For this reason, the most mature approach is to design a flexible solution that can bring together the strengths of both consultancy and interim management according to the need, rather than making a sharp choice between them. This flexibility offers a dynamic solution that adapts to the organisation's changing needs.

When these three steps are applied together, the organisation not only chooses the right type of solution; it also structures the process in a way that will extract the highest value from that solution. The right choice is often not a sharp "either-or" decision; it is a nuanced matter of balance, adapted to the organisation's real need. Being able to strike this balance is becoming an increasingly valuable competence for modern corporate decision-makers.

As E&E Group Interim, we embrace an integrated approach that combines the analytical strength of management consultancy with the implementation determination of interim management. With our network of verified senior leaders and our international Valtus Alliance partnership, we clarify together whether your organisation needs merely advice or actual leadership, and we shape the interim management and consultancy solutions suited to it. To assess which approach is most appropriate for your organisation, you can get in touch with us.