There's no single right answer, but there is a clear path that most successful brands follow. The decision between an agency and an in-house team is less about which is better, and more about which is right for your current stage of growth. For most businesses, the journey begins with an agency and, as scale and complexity increase, evolves toward bringing key functions under your own roof.
The most concrete advice for when to start looking at an agency comes from The Bottom Line: Ecommerce Tactics for Profitable Growth, where the hosts suggest the $30,000 to $50,000 per month ad spend level is the right time. Below that, you likely can't afford a quality agency, and the economics don't quite work. Hristo Arakliev offered a similar benchmark on Ecommerce Coffee Break for established Shopify stores looking to expand to Amazon. He argued that if you're already generating a few hundred thousand dollars a month, you should hire an Amazon expert agency rather than divert focus from what's already working. In both cases, the trigger is reaching a level of momentum where specialized expertise becomes a powerful lever for growth, not a distraction.
The case for starting with agencies is strong. As Meaghan Connell and AJ Yager explained on Honest Ecommerce, you're tapping into their shared experience. An agency is testing strategies across multiple clients, giving you the benefit of their collective pattern recognition. As Cody Wittick noted on Shopify1Percent, it’s about choosing between speed and control. Agencies give you immediate access to a diverse depth of knowledge that’s simply impossible to replicate with a single hire. This point was echoed on The Bottom Line, where the hosts discussed influencer marketing. Finding one in-house employee who possesses all the necessary skills in strategy, execution, and analytics—and then equipping them with all the top-tier software—is incredibly difficult and expensive. With an agency, that's what you're paying for.
The tipping point toward building an in-house team often happens as a brand crosses into the 8-figure revenue range. Eugene Chew of BikesOnline shared a fantastic, real-world example of this on Honest Ecommerce. As his company grew, they systematically brought their paid media (Meta and Google) and SEO in-house. The decision was driven by a simple P&L calculation: can you get similar or greater value from a full-time expert on staff for less money than the agency costs? As your business grows, the answer to that question shifts. At a certain scale, having a dedicated person who lives and breathes your brand, understands its nuances, and can react instantly becomes more valuable than an external team.
Of course, bringing marketing in-house isn't a magic solution. It introduces a completely new set of challenges. Cody Wittick described it as choosing your poison, noting that building a team is slower and requires more upfront investment. You also face issues like salary creep, poaching from other companies, and high replacement costs if a key team member leaves. A single person represents a single point of failure. If your in-house ads manager resigns, your customer acquisition efforts can grind to a halt. An agency, by contrast, provides continuity and redundancy.
This is why the final destination for many large, successful brands isn‘t a fully in-house team, but a hybrid model. Nik Sharma made this point on Limited Supply, suggesting the optimal structure often integrates elements of both. Mature brands might have an internal team managing the core, day-to-day work for channels like paid search and email. At the same time, they might engage a specialized agency to launch a new channel like TikTok, handle a complex project like a conversion rate optimization deep dive, or simply provide a fresh strategic perspective. This approach gives you the control and deep business integration of an in-house team, plus the specialized, on-demand expertise of an agency. It’s a flexible and resilient structure that truly offers the best of both worlds.
