Marketing agency or in-house marketing?

Many companies in Norway are now facing the same question as their growth begins to take off: should we build our own marketing team, or work with an agency? The answer is rarely black and white. It depends on everything from the company’s size and ambitions to its budget, expertise and how fast the market is moving. A 2025 survey by Kantar showed that 62% of Norwegian SMEs had considered changing their model in the past year, suggesting that many are experiencing friction with the solution they already have. This article gives you an honest picture of both options, so you can make a choice based on the reality of your business, not gut feeling.

What is the difference between a marketing agency and in-house marketing?

The key difference lies in where the expertise resides. With in-house marketing, you hire people who work exclusively for your company, day in and day out. They know the products, the culture and the customers from the inside. A marketing agency, on the other hand, is an external partner that serves several clients at the same time and brings a breadth of experience and tools to the table.

In practice, this means different strengths and weaknesses. In-house offers proximity and control, whilst an agency offers flexibility and specialist expertise. Most companies that are successful with marketing in 2026 have found a balance that suits their situation. Some do everything in-house, some use an agency for everything, and an increasing number combine both. Let’s take a closer look at what each model actually entails.

In-house:

In-house staff

In-house marketing means you have your own staff whose primary role is marketing. This could be a single person covering multiple roles, or a whole team of specialists in content, social media, SEO, advertising and design. The advantage is obvious: these people are 100% dedicated to your business. They don’t need to familiarise themselves with new clients every week, and they build up in-depth knowledge over time.

The downside is that you’re limited by the people you have. If your marketer is strong on content but weak on paid advertising, you have a skills gap that won’t fill itself.

Close to the organisation

An in-house marketer sits in the same meetings as the sales department, hears what customers are complaining about and sees which products are working. This proximity to the organisation is difficult to replicate from the outside. When something happens internally, such as a product launch or a change in strategy, the marketing department can react immediately without waiting for briefings and approval rounds with an external party.

This close connection makes it easier to create marketing that actually reflects the reality of the company, not just a polished image from the outside.

Fixed costs

With in-house marketing, you know exactly what you’re paying each month. Payroll costs are predictable, and you avoid surprises in the form of extra billed hours. For businesses that need stable, consistent marketing activity throughout the year, this can provide good financial control.

At the same time, ‘fixed cost’ is not the same as ‘low cost’. A senior marketer with strong expertise commands a competitive salary, and you must also factor in holiday pay, pension contributions, training, tools and licences. The cost is predictable, but it remains the same regardless of whether it is peak season or a quiet period.

Marketing agency:

External partner

A marketing agency acts as an extension of your business. You gain access to a team with a range of skills without having to hire everyone yourself. The relationship is contract-based, and you can adjust the scope as needed. The best collaborations arise when the agency doesn’t just carry out tasks, but actually understands your business objectives and works proactively.

Mediabooster is an example of an agency that positions itself as a partner and colleague, not just a supplier. This approach means the agency functions more as part of the team than as an external service provider, which reduces much of the friction that might otherwise arise.

Broad expertise

An agency with ten employees may have specialists in SEO, paid advertising, content production, web development, design and analytics. To match that breadth in-house, you would need to employ at least as many people. Most SMEs in Norway do not have the budget for that.

The agency also has the advantage of working with many different industries and challenges. This means they have often encountered your challenge before and already know what works and what doesn’t. This breadth of experience is difficult to build up in an in-house department that works with just one company.

Flexible capacity

One of the most practical benefits of an agency is the ability to scale up and down. Do you need a major campaign in Q4? The agency will allocate more resources. Is January quiet? Then you can scale back your activities. This flexibility is particularly valuable for businesses with seasonal variations or unpredictable demand.

With an in-house team, you pay the same regardless. If you’ve hired five people, you’ll have five salaries to pay in January, even if the workload is half of what it was in November.

Advantages of in-house marketing

Better knowledge of the business

No one knows your business better than those who work there. An in-house marketer understands the nuances of the product, knows which customers are most profitable, and understands the background to decisions. This in-depth knowledge makes it easier to create credible and precise communication. It takes time for an agency to build up the same level of insight, and sometimes they never quite get there.

Close collaboration with sales and management

Marketing works best when it is closely linked to sales. An in-house marketer can attend sales meetings, hear customer objections in real time and adjust messages based on what is actually happening in the sales process. This link between sales and marketing is one of the key drivers of growth, and it is easier to achieve when everyone is under the same roof.

Management also gains faster access to market data and can make decisions based on up-to-date information without waiting for reports from an external party.

Full control over priorities

When you have an in-house team, you decide for yourself what they work on and when. There are no other clients competing for your attention. If something is urgent, you can reprioritise immediately. This control is valuable for businesses operating in markets where things change rapidly, or which have frequent product launches.

Shorter decision-making processes

Internal communication is faster than external communication. An idea can go from concept to implementation in hours rather than days. You avoid having to send briefs, wait for quotes and approve hours. For businesses that value speed, this is a real advantage.

Disadvantages of in-house marketing

Limited breadth of expertise

Very few companies can afford to hire specialists in every discipline. The result is often that one or two people cover everything from social media to Google Ads, SEO, email marketing and graphic design. It is unrealistic to expect one person to be an expert in all of this. The consequence is that some areas are deprioritised or carried out to a mediocre standard.

Higher personnel risk

What happens when your marketer resigns? Or goes on sick leave for three months? With a small in-house team, you are vulnerable to absences. All the knowledge is in the heads of one or two people, and it takes time to replace them. An agency always has someone who can take over, because the expertise is spread across several people.

Difficult to stay up to date

Marketing changes rapidly. Algorithms are updated, new platforms emerge, and best practice for SEO in 2026 won’t be the same as in 2024. An in-house marketer who spends most of their time producing content and running campaigns has limited time for professional development. An agency that works with many clients is forced to stay up to date because it is part of the business model.

Costly to build a full team

If you’re going to cover all disciplines in-house, we’re quickly talking about four to six roles. That includes a content producer, designer, SEO specialist, advertiser, analyst and perhaps a marketing manager at the top. For most Norwegian SMEs, this is unrealistic. Many end up with a team that is too small and stretched too thin, and quality suffers.

Benefits of a marketing agency

Access to specialists

When you work with an agency, you gain access to people who live and breathe their fields of expertise. The SEO specialist does SEO all day, the designer designs all day, and the advertiser optimises campaigns all day. This depth of expertise is difficult to match in-house unless you have a large team.

At Mediabooster, for example, we have specialists in everything from AI and automation to web development, SEO and content production. This means you can bring in exactly the expertise you need, when you need it.

Experience across many industries

An agency that has delivered over 450 projects has seen patterns that repeat themselves. They know that what works for a property firm can often be adapted for a healthcare company, and they have data showing what delivers results. This cross-disciplinary expertise is one of the most underrated benefits of using an agency. You don’t just get a marketer; you gain access to the experience of hundreds of other businesses.

Faster implementation

An agency has the processes, tools and templates ready to go. Whereas an in-house team might spend weeks setting up a new campaign structure from scratch, an agency can do it in days because they’ve done it many times before. This speed can be crucial in markets where timing is everything.

Scalable capacity

The need for marketing is rarely evenly distributed throughout the year. With an agency, you can ramp up efforts during busy periods and scale back during quieter times. You pay for what you use, not for fixed capacity you don’t always need. This flexibility allows for better resource utilisation and makes it easier to adapt to changes in the market.

Disadvantages of a marketing agency

Less insight into internal culture

No matter how well an agency does its job, they will never know your company as well as your own employees. Nuances in corporate culture, informal decision-making processes and internal tensions are difficult to pick up on from the outside. This can sometimes lead to communication that feels a bit ‘off’, especially at the start of the collaboration.

Requires proper onboarding

Working with an agency isn’t something you can just switch on. It requires proper onboarding where the agency is given access to relevant information, understands the target audience and gets to know the brand. Companies that invest time in this phase achieve much better results than those that simply send over a logo and say “get on with it”. The maths is simple: the better you brief, the better results you get.

Not all agencies are equally good

The agency market in Norway is vast and complex. It ranges from one-man businesses to large corporations, and quality varies enormously. Some agencies promise the moon without having the expertise to deliver. Check references, ask for case studies and speak to existing clients before you sign. Choosing the wrong agency can set you back months.

When should you opt for in-house marketing?

In-house marketing makes the most sense when you have enough volume to justify a full-time role, and when your marketing is closely linked to day-to-day operations. Companies with complex products that require in-depth specialist knowledge often benefit from having marketing staff closely involved in product development. The same applies to businesses with strict confidentiality requirements or regulatory frameworks, where it can be difficult to share information with external parties.

If you have stable and predictable marketing activity throughout the year, and you have already identified which channels work, an in-house team may be the right choice. But be honest with yourself: can you afford to hire enough people to cover all the areas of expertise you need?

When should you choose a marketing agency?

An agency is often the right choice when you need a broad range of expertise without building a large team, or when you are in a growth phase where your needs are changing rapidly. Many start-ups and SMEs find that working with an agency gives them access to a level of expertise they could never have built in-house.

An agency is also a good fit when you need to test new channels or strategies. Instead of hiring someone to try out TikTok advertising, you can let the agency run a pilot project and evaluate the results before committing. Businesses looking to combine marketing with technology, such as AI-driven content production or marketing automation, also have much to gain from working with an agency that has this expertise built in.

Frequently asked questions

Is it cheaper to hire in-house?

It depends on what you’re comparing. One in-house generalist may seem cheaper than an agency, but if that person can’t cover all the areas you need, you’ll end up with gaps in your strategy. If you compare a full in-house team with working with an agency, the agency is often more cost-effective for SMEs because you share resources with other clients.

How big should a business be?

There is no magic threshold, but as a rule of thumb, you should have enough marketing activity to fill at least one full-time role before considering an in-house team. Companies with fewer than 20 employees rarely have enough volume to justify a full marketing team. For these, an agency – either on its own or in combination with an in-house coordinator – is often the smartest solution.

Can you combine an agency with an in-house team?

Absolutely, and this is actually the most common model among growing companies. A typical setup involves having an in-house marketing manager or coordinator who oversees strategy and day-to-day communications, whilst the agency handles specialist tasks such as SEO, advertising and content production. This hybrid model gives you the best of both worlds: in-house control and external expertise.

What delivers the quickest results?

An agency typically delivers faster results in the start-up phase because they have processes and expertise in place from day one. An in-house team needs time to build up routines, tools and knowledge. Over time, a good in-house team can match the agency in terms of speed, but for the first six to twelve months, the agency is almost always faster.

What do other SMEs do?

Figures from 2025 show that around 55% of Norwegian SMEs use a combination of in-house resources and an agency. Around 30% use agencies only, and just 15% handle everything in-house. The trend is clearly moving towards hybrid models, where companies retain strategic control internally whilst bringing in specialist expertise from agencies.

In summary

The choice between a marketing agency and in-house marketing is not about what is ‘best’, but about what suits your business right now. In-house offers proximity, control and in-depth business knowledge. Agencies offer breadth, flexibility and specialist expertise. Most companies that are truly successful with marketing find a model that combines the strengths of both approaches.

Be honest about what you have in-house, what you’re missing, and how quickly you need results. It is better to acknowledge a skills gap and fill it with the right partner than to stretch an understaffed team to breaking point.

Unsure what suits your business?

Mediabooster has helped over 450 businesses in Norway and Scandinavia find the right marketing model, whether that means building up internal teams, taking over as an external agency, or working side by side as part of your team. We act as a partner and colleague, not just an external supplier, and we help you with everything from strategy and SEO to AI-driven content production and web development.

Would you like to find out what will drive the most growth for your business? Book a no-obligation meeting with us and let’s explore the possibilities together.