From Agency to In-housing: A Strategic Roadmap for Success on Amazon

Last updated: 23/04/2026

Starting sales on Amazon is a marathon, not a sprint. Many entrepreneurs wonder: should they start on their own or with professional support? The answer is: use expert knowledge to build the foundations, and only think about independence when the scale of the business justifies it.

Table of Contents:

1. Strategic path to entering Amazon – from expert support to complete independence

2. Stage 1: Building foundations and scaling in cooperation with an agency

3. Stage 2: Preparation for taking over operations and validation of the organisation's readiness

4. Stage 3: Independent business management and profitability optimisation

5. FAQ – Selling on Amazon (strategy and scaling perspective)

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Strategic path to entering Amazon – from expert support to complete independence

Entering Amazon should not be treated as a one-off action, but as a well-thought-out, multi-stage process of building competence and competitive advantage. This is an environment where not only the best products win, but above all the best-managed operations – based on data, optimisation, and knowledge of the platform's mechanisms. Every decision – from the choice of the cooperation model, through how advertising campaigns are run, to the management of logistics and product availability – has a direct impact on growth rate, profitability, and sales account security.

For many companies, the biggest challenge is not the start of selling itself, but avoiding mistakes that can halt growth right at the start. Lack of policy knowledge, suboptimal listings, or poorly managed PPC campaigns can lead to budget burn or even account blocks. Therefore, a strategic approach that takes into account both the current resources of the organisation and its long-term business goals – whether the company wants to build internal competencies or scale sales with the support of external partners – is essential.

The stages below show, step by step, how to transition from dependence on external experts to conscious, independent sales management. This is not only a roadmap of actions, but also a decision-making model – indicating when it is worth accelerating growth with an agency, and when to take full control, maximising efficiency and margin on one of the most demanding e-commerce platforms in the world.

Stage 1: Building foundations and scaling in cooperation with an agency

The first phase, typically spanning a period of 6 to 12 months, is necessary for a brand's survival in the rigorous Amazon ecosystem. Cooperation with a professional agency at this stage helps avoid costly mistakes, such as account suspensions resulting from lack of knowledge about the dynamically changing platform policies. The agency brings ready-made know-how, specialized tools, and a team of experts - from graphic designers to compliance specialists - without the company having to bear the costs of long-term recruitment and training. During this time, the partner takes full responsibility for account setup, brand registration in Brand Registry, and optimization of listings for search algorithms. A key element of this stage is a success-fee-based billing model, which motivates the agency to maximize the client's profit, as its earnings are directly dependent on sales growth. Thanks to this approach, the company's internal team can focus on product development while the agency builds a stable market position and gathers the first crucial sales data.

Stage 2: Preparation for taking over operations and validation of the organisation's readiness

The decision to bring competencies in-house should be made at a point when the scale of the business and the margins achieved justify building an own team. According to market practitioners, a dedicated team makes the most sense when Amazon turnover exceeds EUR 10 million per year or when the product is so specific that it requires very deep industry knowledge available only inside the organisation. Preparing for this transition needs a rigorous knowledge audit; employees must master stock management, PPC campaign operational processes, and case management procedures. Technical aspects are extremely important: from the beginning, the agency should only have access as a "Registered Agent", while the primary owner of the Brand Registry account and Principal administrator must remain the company. This allows for safe removal of agency permissions without the risk of losing control over the trademark or review history. At this stage, the agency should hand over full documentation of the strategy, templates, and checklists that have until now guaranteed operational continuity.

Stage 3: Independent business management and profitability optimisation

After taking the reins, the main challenge becomes maintaining the growth rate while optimizing the margin, and not just the turnover. An independent team must transition from simple numbers reporting to advanced, data-driven analytics. The foundation here is monitoring the relationship between ACoS (cost of advertising in relation to paid sales) and TACoS (total cost of advertising in relation to all sales). A healthy, self-managed business aims for a situation where TACoS is 10-15 percentage points lower than ACoS, confirming that advertisements are successfully building organic visibility. It is also essential to actively manage inventory health through the IPI score to avoid long-term storage fees and maintain Buy Box continuity. Frequently, the most stable model after the "going independent" stage remains a hybrid model, in which the company manages logistics and customer service, but retains agency support for the most complex challenges, such as expansion into new, difficult markets or advanced compliance.

The above process shows that choosing an agency is not just outsourcing a service, but an investment in knowledge transfer, which in due course allows the company to transition to full professionalisation and independence on the global shelf of Amazon.

Trust an experienced partner, check out what comprehensive Amazon sales management looks like.

Summary: when support becomes an advantage, and independence – a natural step of growth on Amazon

The road to successful selling on Amazon is a process that requires not only resources, but above all the right timing of decisions. Agency support at the beginning allows you to significantly shorten time-to-market, reduce the risk of mistakes, and build solid foundations based on proven solutions. In turn, the moment of transitioning to an in-house model should not stem from ambition, but from the real readiness of the organisation – both in terms of team competence and the scale of the business.

The most effective organisations treat this process flexibly, adapting the operating model to current needs and goals. For some, the optimal solution will be complete independence; for others – a hybrid model, combining internal control with expert support in key areas. Regardless of the route chosen, one thing remains critical: a consistent approach based on data, optimisation, and long-term strategy, which allows you not only to grow, but above all to build a stable and profitable business on the global marketplace.

FAQ – Selling on Amazon (strategy and scaling perspective)

Is it worth starting to sell on Amazon on your own?
Initially, usually no. Lack of experience increases the risk of errors, such as account locks, incorrect ad campaign setups, or suboptimal listings. Cooperating with an agency allows you to enter the market faster and avoid costly mistakes.

How long does it take to achieve stable sales on Amazon?
Most commonly 6 to 12 months. This is the time needed to build visibility, gain reviews, optimize PPC campaigns, and gather sales data.

When does it pay off to transition to an in-house model?
Most often when sales exceed approx. EUR 10 million per year, the company has the resources to hire specialists, and a need for full control over the strategy arises. Without the proper scale, maintaining a team may be less cost-effective than collaborating with an agency.

What is more important on Amazon: product or marketing?
Both elements are key, but without appropriate marketing, even a good product may not sell. Visibility (SEO + PPC) and conversion (listing, reviews, price) must work together.

What do ACoS and TACoS mean and why are they important?
ACoS (Advertising Cost of Sales) is the cost of advertising relative to sales from ads, and TACoS (Total Advertising Cost of Sales) is the cost of advertising relative to total sales. A healthy business strives for a situation where TACoS is lower than ACoS, which signifies growing organic sales.

How to avoid an account block on Amazon?
The most crucial aspect is adhering to the platform's policies, correct product descriptions, avoiding manipulation of reviews, and product compliance with regulations. In the beginning, it is worth utilizing the experience of experts or an agency.

Should the agency have full access to the Amazon account?
No. The safest solution is granting the agency access as a "Registered Agent", while the company retains the role of main owner (Principal). Thanks to this, you maintain full control over the account and brand.

Does a hybrid model (company + agency) make sense?
Yes, it is often the most effective. The company can manage operations and logistics, while the agency supports with PPC ads, foreign expansion, strategy, and compliance.

What are the biggest mistakes made by beginner sellers on Amazon?
The most common are the lack of a pricing strategy, poor inventory management, ignoring data and analytics, and focusing solely on turnover instead of margin.

Is Amazon suitable for every company?
No. It works code-best for companies that have a scalable product, can compete on price or value, and are ready to invest in marketing and logistics.

How long do you need to invest before Amazon starts making a profit?
Usually, the first months are an investment in visibility and reviews. Real profitability appears after several months of optimization, most commonly in the range of 6–12 months.

Is it possible to sell on Amazon without advertising?
Theoretically yes, but in practice, it is extremely difficult. PPC ads are key to gaining visibility and sales, especially at the start.