You're spending €15K to €30K a month on marketing. You have people working on it. Content is going out. Ads are running. And growth has stalled.

This isn't a talent problem. It isn't a budget problem. It's a structural problem. The model you chose to run your marketing is not built for the way B2B SaaS actually grows. And until you fix the model, no amount of spend or effort will change the outcome.

This article breaks down the three main options -- in-house, agency, and fractional -- and tells you exactly where each one works, where each one fails, and which one fits the stage you're actually at.

Why This Decision Matters More Than People Think

Most SaaS founders treat the "how do we handle marketing" question as a hiring decision. It isn't. It's a structural decision. The model you choose determines how fast you can move, how aligned your messaging is across channels, and whether your marketing efforts compound or cancel each other out.

Get this wrong and you can throw €500K at marketing over two years and have nothing to show for it. Not because the people were bad. Because the structure didn't let them succeed.

The model shapes everything: speed of execution, quality of coordination, accountability for results, and how quickly you learn what's working. Before you hire someone, sign a contract, or change anything about your marketing, you need to understand what each model actually delivers -- and what it costs you beyond the invoice.

The In-House Marketing Team

What It Looks Like at Each Stage

At early stages (€200K to €1M ARR), in-house marketing usually means one person doing everything: writing blog posts, managing ads, updating the website, posting on LinkedIn. They're stretched thin and constantly context-switching.

At mid-stage (€1M to €5M ARR), the team grows. You might have a content person, a paid ads specialist, an SEO person, and maybe someone running email. Each person owns a channel. The team is bigger, but the channels start working in silos.

At scale (€5M+ ARR), you have a full marketing team with a VP or CMO at the top, specialists in each function, and possibly internal project managers to coordinate. This is where in-house can genuinely thrive.

Where It Works Well

In-house teams have the deepest product knowledge. They sit in product meetings. They talk to customers. They understand the roadmap. This means their messaging can be tighter and more accurate than any external partner could achieve.

Speed is another advantage. When something needs to change on a landing page or an ad, it happens fast. No briefing cycles. No external approval loops. The team just does it.

Full control over brand and positioning stays internal. For founders who are deeply invested in how their company shows up in the market, this matters.

Where It Breaks Down

Hiring takes time. In B2B SaaS, a good marketing hire can take two to four months to find, onboard, and get to a point where they're producing results. If you need growth now, that timeline is brutal.

The cost goes beyond salary. A single mid-level marketing hire in Germany or the UK costs €60K to €90K per year in salary alone. Add benefits, tools, management time, and the ramp-up period where they're learning your product, and the real cost of one person is closer to €100K to €120K in the first year before they're fully productive.

The biggest structural problem with in-house teams is the specialist-silo trap. Once you have separate people for SEO, paid, content, and LinkedIn, each person optimizes their own channel. Nobody owns the customer journey end to end. Your SEO strategy doesn't inform your paid targeting. Your LinkedIn content doesn't match your landing pages. You're executing across channels, but the channels aren't talking to each other.

The Agency Model

What Founders Expect vs What Actually Happens

The pitch is compelling. An agency brings a team of specialists, a proven playbook, and the ability to scale fast without you hiring. You hand them a brief, they deliver results, and you focus on building the product.

Here's what usually happens instead.

The agency assigns an account manager who becomes your single point of contact. That person briefs the internal team. The internal team executes. You review. You give feedback. They revise. The loop takes two to three weeks per iteration. By the time something is live, the market has moved.

The strategy they build is templated. They've worked with dozens of SaaS companies, so they apply the same playbook: run Google Ads on high-intent keywords, publish blog posts targeting informational queries, set up a basic email nurture sequence. It works at a surface level. But it isn't tailored to your specific positioning, your sales cycle, or your customer's actual decision-making process.

Where Agencies Add Value

Agencies are genuinely useful for specific situations. If you need to launch a paid campaign fast and don't have the internal expertise, an agency can get it running in days, not weeks. If you need scale -- high volume of content, multiple ad creatives, multi-market campaigns -- agencies have the bandwidth.

Access to talent is real. A good agency employs people who have deep expertise in specific channels. If you need a world-class paid ads specialist for six months, hiring one full-time doesn't make sense. An agency gives you that expertise on demand.

For companies that have clear positioning, a defined target audience, and a marketing strategy already in place, agencies can be effective executors of that strategy.

Where They Consistently Fail in B2B SaaS

Context loss is the biggest problem. The agency doesn't sit in your sales meetings. They don't talk to your customers. They don't know why deals are won or lost. This means the messaging they create is based on briefs, not on deep understanding. And briefs are always incomplete.

Misaligned incentives compound this. Agencies are incentivized to retain you as a client and to hit the deliverables in the contract. They are not incentivized to tell you that your positioning is wrong, that a channel isn't working, or that you should stop spending on something that isn't driving pipeline. Those conversations threaten the relationship.

The coordination tax is real and expensive. When you outsource marketing to an agency, someone on your side still has to manage them. That person spends 20 to 40 percent of their time briefing, reviewing, chasing, and aligning. You haven't eliminated marketing work. You've just moved it.

Generic playbooks don't compound. An agency applies the same framework to every client. But growth in B2B SaaS comes from understanding the specific intersection of your product, your market, and your buyer's decision process. That understanding can't be templated.

The Fractional Model

What It Actually Is -- and What It Isn't

A fractional growth marketer is not a freelancer you hire to complete tasks. They are not a consultant who writes a strategy deck and disappears. They are not an agency that manages your marketing from the outside.

A fractional growth marketer is an embedded operator. They work inside your team, inside your tools, and inside your processes. They take ownership of acquisition and conversion outcomes. They execute hands-on across channels -- SEO, paid ads, landing pages, content, LinkedIn -- and they coordinate across all of them because they are the single owner of the customer journey.

The difference between fractional and freelance comes down to ownership. A freelancer delivers work. A fractional operator owns outcomes. A freelancer waits for a brief. A fractional operator defines the priorities, builds the strategy, and executes it.

How It Differs From a Consultant

Consultants advise. They analyze your situation, identify problems, and recommend solutions. Then they leave. The execution falls back on you or your team. Consultants are valuable for diagnosis. They are useless for growth.

A fractional growth marketer diagnoses and executes. They don't hand you a list of things to do. They do them. Strategy is part of the work, but only insofar as it informs what gets shipped this week.

Where It Fits in the SaaS Growth Timeline

Fractional growth marketing is built for a specific window: post-product-market fit, pre-full-marketing-team. This is the stage where you know your product works, you know who needs it, but you don't have the marketing infrastructure to scale acquisition predictably.

This typically means €200K to €10M ARR. You have traction. You need systematic growth. But you're not at the point where hiring a VP of Marketing and a team of five makes financial or operational sense.

Why It Compounds Faster

When one person owns SEO, paid ads, copy, landing pages, and LinkedIn, the channels reinforce each other instead of competing. Your ad messaging matches your landing page. Your SEO content informs your paid targeting. Your LinkedIn posts drive traffic to content that converts.

This coordination is impossible when five different people or vendors each own one channel. It's the single biggest structural advantage of the fractional model for B2B SaaS at this stage.

Side-by-Side: In-House vs Agency vs Fractional

When Each Model Actually Makes Sense

Choose In-House When

You're past €5M ARR and marketing is a core competitive advantage. You need full-time, dedicated people who live and breathe your product. You have the budget and the patience to hire, onboard, and build a team that compounds over years.

You already have clear positioning and a defined go-to-market strategy. In-house teams execute best when the strategic foundation is already in place.

Choose an Agency When

You need a specific capability you don't have internally and don't want to hire for permanently. A paid ads specialist for a product launch. A creative team to produce a campaign. A content operation to scale blog output to volumes your team can't match.

Your positioning is clear, your messaging is defined, and you just need execution bandwidth. Agencies work best as extensions of an existing strategy, not as the owners of it.

Choose Fractional When

You have product-market fit but inconsistent or unpredictable lead flow. You're spending on marketing but can't clearly trace spend to pipeline. You have one or zero dedicated marketers and channels aren't coordinated. You need someone who owns outcomes, not someone who delivers deliverables.

You're at the stage where you need growth but not yet at the stage where a full marketing team makes sense.

The Mistake Most SaaS Founders Make

They pick a model based on budget. "We can afford €3K a month, so let's hire a freelancer." Or "We have €15K a month, so let's hire an agency." Budget is a constraint. It is not a strategy.

The model should be chosen based on where you are in your growth cycle and what your actual execution gaps are. A company at €500K ARR with no clear positioning needs something very different from a company at €3M ARR with clear positioning but fragmented vendors.

Picking the wrong model doesn't just waste money. It wastes time. And in SaaS, time to revenue is everything.

The second mistake is treating marketing as a department rather than a function. Departments have budgets, headcounts, and internal KPIs. Functions have one job: drive revenue. The model you choose should be evaluated on whether it drives revenue, not on whether it looks like a marketing department.

What to Look For Before You Commit -- Regardless of Model

Positioning first. Before you scale any channel, you need to be clear on who you serve, what problem you solve, and why you're different. If this isn't clear internally, no model will fix it externally. Start here.

KPIs tied to revenue. Reject any engagement -- in-house, agency, or fractional -- that measures success in traffic, impressions, or content volume. The only metrics that matter at this stage are SQLs, pipeline value, CAC, and conversion rate. Everything else is noise.

Integrated channel thinking. Whoever runs your marketing needs to understand how the channels talk to each other. SEO informs paid targeting. LinkedIn content drives traffic to conversion-optimized pages. Email nurtures leads that came from organic search. If channels are being planned in isolation, the model is wrong.

Accountability for outcomes. Find someone -- or a model -- where there is a single clear owner of acquisition and conversion results. Not deliverables. Not activity. Results. This is the single most important factor in whether your marketing spend turns into growth.

The Model Doesn't Matter as Much as the Ownership Does

In-house teams can be brilliant or broken. Agencies can deliver results or burn your budget. Fractional operators can compound your growth or underdeliver. The model is a framework. What makes it work is ownership.

Ownership means one person or one team has a clear line of sight from marketing activity to revenue impact. They know why something worked. They know why something didn't. They can adapt fast because they understand the full picture.

Pick the model that gives you the tightest loop between strategy, execution, and measurement. That loop is where growth comes from. Everything else -- budget, headcount, tools -- is secondary.

The right model for your company isn't the cheapest one. It's the one that closes the gap between where you are now and where you need to be, as fast as possible, with the least structural friction.

Start there. Everything else follows.