Do you need both an SEO agency and a digital marketing agency?

The short answer: SEO is one channel inside the broader discipline of digital marketing, which also includes paid ads, social media and email — it isn't a synonym for it. A specialist SEO agency goes deeper on organic search specifically; a full-service digital marketing agency covers more channels but sometimes shallower on each. Most businesses starting out need SEO first, since it compounds and keeps working after you stop paying for a single campaign — paid channels can be layered on once the organic foundation is solid.

The confusion between the two is common because the terms get used interchangeably in casual conversation — but hiring the wrong one for your actual need wastes budget either way. Here's the real relationship between them.

SEO vs digital marketing — the actual relationship

Digital marketing is the umbrella term for every channel used to market a business online: organic search (SEO), paid search and social ads, organic social media, email, and more. SEO is one specific channel within that umbrella — a specialist SEO agency isn't offering "less" than a digital marketing agency, it's offering more depth on one specific channel instead of shallower coverage across several.

What a specialist SEO agency typically covers deeply

• Technical SEO — site speed, crawlability, indexing, Core Web Vitals
• Content strategy built around real search intent and keyword research
• Link building and authority development
• Local SEO and Google Business Profile optimization
• Increasingly, AI search optimization (AEO/GEO)

What a full-service digital marketing agency typically adds

Paid search and social ads, organic social media management, email marketing, and sometimes SEO as one item on a longer menu. The tradeoff is usually breadth over depth — worth asking directly how many dedicated SEO specialists (not generalists) actually work on the SEO portion of your account.

Why SEO is usually the right starting point

SEO builds a compounding asset — content and authority that keep generating traffic long after the work that created them is done. Paid ads are rented traffic: the moment budget stops, so does the traffic. For most businesses without an urgent, time-sensitive launch, building the compounding asset first makes the paid spend that comes later more efficient too, since it's not compensating for an organic gap.

Signs you're ready to add paid channels on top of SEO

• Your SEO foundation is solid — indexed, technically clean, ranking for some meaningful terms
• You have a specific, time-sensitive goal paid ads can accelerate (a launch, a seasonal push)
• Budget exists beyond what your SEO program already needs

How to avoid paying for overlap across two vendors

If SEO and paid ads are run by different teams, keyword and landing-page strategy can end up working against each other — and budget gets wasted bidding on paid terms you already rank for organically. Coordinating the two channels (matching keyword strategy, sharing landing-page insights) avoids this regardless of which vendor(s) run each one.

The bottom line

You don't automatically need both — you need whichever channel matches your current stage and goal. For most businesses, that's SEO first, with paid and other channels layered on once the organic foundation is doing its job. If you do end up running both, make sure they're coordinated, not competing.