When I first wrote about these three agency models, outsourcing was already changing how agencies staffed fulfillment. AI has accelerated the shift. Today, an agency no longer has to employ everyone who produces the work—or even outsource every task to another human.
That makes a strategic question increasingly important: What does your agency actually need to own? The client relationship? Strategy? Specialized expertise? Production? Quality control?
Your answer helps determine whether you should operate primarily as what I call a front-end, back-end, or full-stack agency.
How to decide which business model is right for you? Let’s explore the pros and cons, to help you decide what stays the same vs. what might need to change.
Full-Stack Agencies: Client-Facing + Production Work
This traditionally is the “default” agency model. Full-stack agencies typically have the ability and knowledge to handle everything from strategy and design, to development, to maintenance and support. A “full-service” agency is usually a full-stack agency… but not all full-stack agencies are full-service.
- Advantages to Full-Stack: The advantage to full-stack is that agencies can say “yes” to clients faster, since they know when their full team is available (including if the client needs to wait).
- Disadvantages to Full-Stack: The disadvantage is that it’s hard to scale-up (or scale-down) a full-stack agency, since you’re primarily hiring full-time employees… or you need to lay them off if new business contracts.
How to Succeed as a Full-Stack Agency: You need to excel at front-end work… and at efficient production. You’ll also need a strong network and employer brand, to help you match supply and demand, as client needs fluctuate.
The alternative? Choosing to be a front-end agency or a back-end agency. Let’s consider the pros and cons of those models.
Front-End Agencies: The “Face” to Clients
Front-end agencies are doing sales, client strategy, account management, project management, and billing. They are the “face” of things to the clients, and then they turn it over to back-end agency to actually fulfill the work. Front-end agencies outsource production work to other agencies, specialized partners, freelancers, and—increasingly—AI tools. The front-end agency has a relatively fixed cost structure since they only add team members when (for instance) they need more Account Leaders or Delivery Leaders.
- Advantages to Front-End: Advantages include being able to offer a wide range of services to clients, without needing to build the expertise in-house. A well-run front-end agency may also become more transferable because it can grow without adding production headcount at the same rate. But the model itself doesn’t guarantee a premium valuation; buyers will still care about margins, client concentration, leadership depth, recurring revenue, and owner dependence.
- Disadvantages to Front-End: Being a front-end agency adds a level of complexity. The back-end agency or third-party vendor may not always be a reliable partner or committed to the same standards. You’ll need to invest time in vetting partners. You’ll probably need to manage the work more closely than if you were doing it all in-house. And you’re on the hook to clients, when “someone else” makes mistakes on your behalf.
How to Succeed as a Front-End Agency: You need to build a brand, get great at business development, create a strong Delivery Leadership team, and clearly communicate via Account Leaders to understand what clients need.
Tired of dealing with clients? The back-end model might be a better match.
Back-End Agency: Operating the “Boiler Room”
As an alternative, an agency can choose to be a “back-end” agency—where they do white label or strategic partner work for other agencies. The front-end agency handles Strategy and Account Leadership. Typically, Delivery Leaders will connect the two agencies—PMs at the front-end agency coordinate with PMs at the back-end agency.
- Advantages to Back-End: As a back-end agency, you can build a diversified stream of revenue across multiple agencies. If you do good work, you’ll keep getting followup business from your front-end agency partners. Rather than building a premium brand, it’s about running an efficient business. This can be a match if you prefer “doing” the work to selling the work.
- Disadvantages to Back-End: The downside to back-end is that you’re competing on price (and to an extent, quality and turnaround time). Margins tend to be lower. Clients don’t go away; now you’re reacting to what the intermediary agency says the client wants. Your team sometimes has to read the end-client’s mind, since they’re several layers away. And you may feel pressure to say “yes” to client projects you don’t like, because you don’t want to threaten the relationship with the intermediary agency.
How to Succeed as a Back-End Agency: Your success will rely on building a network of team members in affordable markets, and building efficient systems and using AI tools to fulfill important but lower-margin work. Your project managers and other Delivery Leaders must successfully translate across language and cultural differences.
What AI changes about your business model
AI impacts all three business models—but each in different ways.
- Full-stack: AI can make an internal team much more productive, but it doesn’t eliminate the fixed-cost problem. Owners still have to decide what genuinely deserves permanent in-house capacity.
- Front-end: AI and specialized partners can dramatically increase leverage—but the agency needs excellent strategy, client leadership, orchestration, QA, and differentiation.
- Back-end: AI can increase production efficiency, but it can also intensify price pressure on commodity execution. The winners need specialization, systems, speed, and reliable quality.
How to choose: Deciding which Agency Model is right for you
Think about what type of clients you want to work with, how much risk you’re willing to take, where you want to focus your energy, and what size team you want to create.
The default is for agencies to be full-stack: doing the front-end client work and the back-end production work. But that doesn’t mean it’s the right model for you. The major problem with full-stack is that if work surges up or down, you suddenly now have a team that’s too small or too big.
If you want to offer more services without needing to hire a large full-time staff, consider the front-end model. If you want to focus on execution and perfecting the production process, consider the back-end model. If you want more control over the entire process, consider the full-stack model.
Questions to ask yourself
Struggling to decide which model is right for your future? That’s the kind of strategic question I help agency leaders evaluate. In the meantime, here are five questions to consider.
- What work must we own to remain differentiated?
- What work could a partner or AI perform just as well—or better?
- Where do our margins get squeezed today?
- Where does our owner/senior team spend time that they shouldn’t?
- Which model would make the agency easier to grow, lead, and eventually transfer?
Can you change the agency model later?
Do you need to decide on the “right” model in advance? Yes and no. Ideally, you’d choose carefully and then stick with it.
But if need be, you can make changes over time:
- It’s easiest to switch from full-stack to front-end, since you’d keep your client-facing team and find outsourced partners to fulfill the implementation work.
- Switching from full-stack to back-end can work, if you already have a strong network of partner agencies to feed you work (and then you’ll need to recruit more).
- It’s hard to switch from back-end to front-end, although it could work if you test the waters by repositioning as full-stack first.
However, one of these is more popular than other. What’s trending? Read on.
What’s the trend for agency models?
Among my highest performing clients, I’m seeing a shift from full-stack to front-end. They outsource content creation to other agencies and/or AI tools, or they outsource development, or they outsource paid media campaigns. In that case, they might have one designer or developer in-house, for quick-turnaround client requests or to troubleshoot issues from the back-end agency. This lets them build a potentially-salable brand, while being flexible as revenue grows and shrinks.
But at the end of the day, there’s no one-size-fits-all solution. AI is forcing agencies to get much more intentional about what they own.
Dig into the pros and cons of the different agency models, and decide which works best for you. Take the time to understand the risks, opportunities, and potential rewards before you commit. If you’d like expert advice, please reach out.
Question: What changes do you need to make to your agency model?
