Most creators pick one platform and stick to it. Substack or Medium. Newsletter or blog. Community or distribution. But using both together creates something bigger. A search engine flank attack.

Because here’s the secret. Google doesn’t care where the content lives. It cares how strong the domain is, how often the author appears online and how clear the topic universe looks.

Substack has brand power. Medium has domain authority. Put them together, and suddenly those impossible keywords everyone complains about start looking realistic.

Let’s break down how to use both platforms as one SEO system in 2026.

1. Substack gives us the voice, Medium gives us the reach

Substack posts build identity. Readers know us. They reply. They bookmark. They share. Google sees all of that behavior and treats a Substack as a living signal. But Substack’s domain authority is lower compared to Medium.

Medium is the opposite. Huge domain authority, very little personal identity unless we build it. But that authority helps us break into competitive SERPs.

So we let Substack shape the message and Medium carry the megaphone.

When both move together, Google sees two strong signals from two different ecosystems.

2. Publish the “master version” on Substack first

Substack is home base. The voice is stronger there. The comments help. The community feedback helps. Google sees that engagement. More time on page. More internal navigation. More authority around specific topics.

So the original lives on Substack. That’s the version that builds our brand.

3. Republish or rework on Medium for domain strength

Then we take the same idea and repurpose it for Medium. Not a copy paste. A fresh version. Different structure. Slightly different angle. New intro. New examples.

Google treats these as two separate pieces of content from the same author, reinforcing each other. Medium ranks for the competitive keyword. Substack builds topical authority. Both feed traffic into each other.

It’s a loop.

4. Use Medium to rank, use Substack to convert

Medium brings cold readers. Substack turns those readers into long term subscribers. This combo creates a natural funnel.

For example:

Medium ranks for “newsletter SEO 2026”
The reader finds the article
We link to a deeper Substack analysis
Substack converts them
Now they exist inside our own ecosystem

Medium brings them in. Substack keeps them.

5. Link the posts strategically

This is where most people mess up. They either don’t link at all, or they link everything like it’s a web of spaghetti.

The structure that works:

Medium links once to Substack, usually at the end
Substack links once to Medium only when relevant
Both link to older related posts on their own platform

This creates a clean internal map. Google loves clean maps.

6. Don’t chase duplicates, chase topic dominance

People worry about duplicate content. But Google doesn’t punish updated rewrites, different layouts, new intros, new examples and different formatting. That’s not duplicate. That’s adaptation.

We are publishing two versions of the same brainwave. Google understands that. And since they live on different domains, it helps us widen the surface area around the topic.

We aren’t competing with ourselves. We’re building an ecosystem.

7. Substack gets long tail, Medium gets the big phrases

The pattern that works:

Substack ranks for niche long tail like “how to use GSC on Substack”
Medium ranks for heavy hitters like “Substack SEO” or “how to start a newsletter”

Why? Because Medium’s domain power carries weight on competitive SERPs. Substack’s freshness signals help us capture smaller searches with high intent.

Together we rank across an entire topic cluster.

8. Boost both posts on social so Google sees real activity

Google chases attention. Not likes. Attention.

So we push:

Medium on X, Bluesky and LinkedIn
Substack posts on Notes and email

Google sees the traffic flow. It sees the spikes. It sees the scroll depth. That gives Substack posts more authority and Medium posts more relevance.

The two platforms amplify each other’s external signals.

9. Use both platforms to reinforce your name as the entity

This matters more in 2026 than people realize. Google is shifting toward entity based ranking. It wants to know who wrote something. Not just what it says.

Publishing across Substack and Medium under the same name, same topics, same style creates a strong author entity. Google starts to associate our name with the topic.

That pushes up both platforms.

10. Treat Substack and Medium like two wings of one engine

The worst mistake is to treat them as competitors. They’re not. They’re complementary tools. Substack is where the voice lives. Medium is where the reach happens. The magic happens when we intentionally intertwine the two.

If Substack is our home, Medium is our billboard on the busiest street on the internet.

Use both, and suddenly ranking isn’t so impossible.

The Bottom Line

Using Substack and Medium together for SEO works because each platform strengthens the other. Substack builds the voice, authority and community. Medium uses its domain strength to push our ideas in front of people Google wouldn’t normally send our way. When both are synced, we rank for keywords that should be out of reach. And we convert those readers into long term followers inside a system we control.