At some point, every store owner asks the same question: do I actually need an agency for this, or can I just figure it out myself? It’s a fair question. It’s also one that gets a lot less simple once you’re staring at a canonical tag error at 11pm wondering what went wrong.
There’s no universal right answer here, and anyone who tells you otherwise is probably trying to sell you something. Some businesses do very well managing SEO themselves, particularly in the early stages. Others bring in an agency and wish they’d done it sooner. After all, around 53% of all website traffic comes from organic search, so it isn’t something to overlook.
This article covers what DIY SEO actually involves and the questions worth asking before you decide if you need a helping hand or not.
Table of Contents
- What Does DIY SEO Actually Involve?
- The Real Cost of Doing It Yourself
- Where DIY SEO Works Well
- Where an Agency Earns Its Place
- Signs You’re Ready to Bring in an Agency
- Can You Do Both?
- So, Do You Need an SEO Agency?

What Does DIY SEO Actually Involve?
It helps to be clear about what you’re taking on. Truthfully, SEO isn’t just one thing, but rather a collection of disciplines that sit under the same umbrella. Each one requires different skills, different tools and different amounts of time.
On-page SEO covers things like your page titles, meta descriptions, alt-text and the copy on your product and category pages. It’s the most accessible entry point into SEO, but doing it well takes more than filling in a few fields. Understanding which keywords to target and how to make each page useful to both Google and a real customer takes time to get right, and it’s easy to go through the motions without seeing much in return.
Technical SEO is where things get more complex. Crawl errors, site speed, duplicate content, structured data and indexation issues all fall into this category. Getting it wrong doesn’t just slow your progress, it can actively set you back. A misconfigured robots.txt file, for example, can accidentally prevent Google from crawling your store entirely.
The Real Cost of Doing It Yourself
The appeal of DIY SEO is obvious. You’re not paying an agency retainer and if the budget is tight it can feel like the natural starting point.
But your time has a cost too. Every hour spent on keyword research or diagnosing a site issue is an hour not spent on your products, your customers or the parts of the business that genuinely need you.
There’s also the question of mistakes. Technical SEO errors can be slow to surface; a problem introduced today might not show up in your traffic data for several weeks. By that point you may have lost rankings that took months to build. An experienced eCommerce agency tends to catch these things before they become costly.
Your time is not free. The real question is whether your hours are better spent on SEO or on everything else that needs your attention. eCommerce SEO delivers an average ROI of 317%, so it’s worth the investment.
Where DIY SEO Works Well
There are situations where managing your own SEO makes more sense, particularly as a starting point.
You’re just starting out.
Early-stage stores with smaller catalogues and limited competition can make real progress with solid on-page work and consistent content.
You have time to learn
If you have the bandwidth to invest in understanding SEO properly, the knowledge you build has long-term value for your business.
Competition is low
In niche markets where competitors aren’t investing heavily in SEO, getting the basics right can go a surprisingly long way.
Budget is genuinely limited
A poor-quality agency is worse than doing it yourself. If you can’t yet afford a reputable one, learning the fundamentals is the smarter short-term move.
Where an Agency Earns Its Place
At a certain point, the gap between what you can manage yourself and what a specialist team can do becomes difficult to ignore.
Technical depth
A good agency has worked through the same technical challenges across many different sites. They know what to look for, any missed opportunities, how to prioritise fixes and how to implement them without disrupting anything in the process. For a growing eCommerce store, the technical layer of SEO is not optional, and getting it right consistently takes experience that’s difficult to build in isolation.
Tools and data
Professional SEO tools are not cheap when you’re paying for them individually. A reputable agency already has access to them and uses them every day. You benefit from the insights without carrying the subscription costs, and more importantly, you get someone who knows how to interpret what the data is actually telling them.
Consistency
SEO requires regular, sustained effort. Content needs publishing, keywords need constant tracking, links need building and technical issues need addressing as they come up. In-house, this work tends to get deprioritised when things get busy, which is understandable but costly over time. An agency keeps the momentum going regardless of what else is happening in your business.
Strategy across channels
The best agencies connect SEO to your broader marketing activity rather than treating it as a standalone task. When organic search, paid media and email work together around the same customer journey, the results are meaningfully better than when each channel operates on its own.
Signs You’re Ready to Bring in an Agency
There’s rarely one single trigger, but there are signals worth paying attention to. If your store is growing but organic traffic isn’t keeping pace, that’s worth investigating. The same applies if you’re spending time on SEO but aren’t confident the right work is being done, or if a site migration or replatform is on the horizon.
Competitive pressure is another clear one. If rivals are consistently outranking you for keywords that drive real revenue, and you’re not sure why, that’s a gap a specialist can help close. A large product catalogue that’s difficult to keep on top of manually is also a good sign that support would pay for itself fairly quickly.
Can You Do Both?
Yes, and it’s more common than you might think. A lot of brands come to us with an internal marketing team already in place. Rather than replacing what they’re doing, we work alongside them, handling the technical and strategic work while they stay close to the products and the customer. It tends to be a natural split and one that gets good results.
The key is making sure nothing falls through the gap between what the agency owns and what the internal team owns. When everyone is clear on who’s doing what, the whole program moves faster.
So, Do You Need an SEO Agency?
If you’re an eCommerce store with real growth ambitions and a catalogue that goes beyond a handful of products, working with a specialist agency will almost certainly get you further, faster, than going it alone.
At eComOne, we work with eCommerce brands who are serious about organic growth. Whether you want to know if your current SEO is actually working, or you’re ready to hand it over to a team that does this every day, we’re happy to have that conversation. Start by getting in touch and we can take it from there.

