Build Clusters

Build a topical authority cluster from a seed keyword using pillar-spoke

structure, coverage scoring, and interlinking plans.

What is a Topic Cluster?

A topic cluster is a group of interlinked pages that collectively cover a subject

area. Google evaluates topical authority at the cluster level — ranking a single

page is harder if the site has no supporting content around the topic.

Structure:

• Pillar page — comprehensive overview of the broad topic (targets head term)

• Spoke pages — focused articles covering subtopics (target body/long-tail terms)

• Internal links — every spoke links to the pillar, pillar links to all spokes, spokes cross-link to siblings

Before You Start

Gather this context (ask if not provided):

• Seed topic. The broad subject area to build authority around.

• Existing content. Does the site already have pages on this topic? List them.

• Business relevance. How does this topic connect to the product or service?

• Content capacity. How many pieces can the team produce per month?

Step 1: Subtopic Discovery

From the seed topic, generate subtopics using these methods:

Search-derived:

• People Also Ask questions for the seed keyword

• Related searches at the bottom of SERPs

• Autocomplete suggestions (seed + a, b, c...)

• Competitor content analysis — what subtopics do top-ranking sites cover?

Intent-derived:

• Awareness: "what is [topic]", "why [topic] matters"

• Consideration: "best [topic] tools", "[topic] vs [alternative]"

• Implementation: "how to [topic]", "[topic] tutorial"

• Troubleshooting: "[topic] not working", "common [topic] mistakes"

Audience-derived:

• Beginner questions about the topic

• Advanced practitioner concerns

• Decision-maker evaluation criteria

Aim for 8-20 subtopics per cluster.

Step 2: Cluster Map

Organize subtopics into a structured cluster:

Pillar: [Broad Topic] (head term)

│

├── Spoke: [Subtopic 1] (body term)

│   └── Intent: informational

│

├── Spoke: [Subtopic 2] (body term)

│   └── Intent: commercial investigation

│

├── Spoke: [Subtopic 3] (long-tail)

│   └── Intent: transactional

│

├── Spoke: [Subtopic 4] (long-tail)

│   └── Intent: informational

│

└── ... (8-15 more spokes)

Step 3: Coverage Scoring

Score how well the existing site covers the cluster:

Subtopic

Existing Page?

Quality (1-5)

Traffic

Gap?

[subtopic 1]

/blog/topic-1

4

500/mo

No

[subtopic 2]

—

—

—

Yes

[subtopic 3]

/blog/old-post

2

50/mo

Partial (needs refresh)

• Full gap — no existing page, needs creation

• Partial gap — page exists but is thin, outdated, or off-intent

• Covered — strong existing page, may just need internal linking

Step 4: Pillar Page Design

The pillar page should:

• Cover the topic comprehensively at an overview level (2,000-4,000 words)

• Link to every spoke page for deeper dives

• Be structured as a table of contents for the entire cluster

• Target the highest-volume keyword in the cluster

• Include a summary of each subtopic (2-3 paragraphs) with a link to the full spoke

Pillar page is NOT a mega-article that tries to cover everything in depth. It is a hub that distributes authority and directs readers to the right spoke.

Step 5: Interlinking Plan

Map the internal links:

From Page

To Page

Anchor Text

Context

Pillar

Spoke 1

"[subtopic 1] guide"

In the subtopic 1 overview section

Spoke 1

Pillar

"[broad topic]"

In the introduction or conclusion

Spoke 1

Spoke 2

"[subtopic 2]"

Where subtopic 2 is mentioned contextually

Spoke 3

Spoke 1

"[subtopic 1]"

Where comparison is relevant

Rules:

• Every spoke links to the pillar (mandatory)

• Pillar links to every spoke (mandatory)

• Spokes cross-link to 2-4 siblings (where contextually natural)

• Use varied anchor text (not always the exact keyword)

Step 6: Cluster Health Metrics

Score the cluster's readiness to compete:

Coverage Score  = (Covered spokes / Total spokes) x 100

Link Health     = (Spokes with bidirectional pillar link / Total spokes) x 100

Content Quality = (Spokes scoring 3+ quality / Total spokes) x 100

Metric

Score

Threshold

Coverage

[x]%

70% to start ranking for pillar keyword

Link Health

[x]%

100% is the target — every spoke must link to pillar and back

Content Quality

[x]%

80% — clusters with thin spokes dilute authority

Expected Outcomes by Health Level

Cluster State

Coverage

Link Health

Content Quality

Expected Result

Incomplete

<50%

<70%

Any

Pillar unlikely to rank page 1; spokes rank individually at best

Developing

50-70%

70-90%

50-80%

Pillar may appear page 2-3; some spokes rank for long-tail

Competitive

70-90%

100%

80-90%

Pillar competes for page 1; most spokes rank for their targets

Dominant

>90%

100%

>90%

Pillar strong on page 1; cluster captures most queries in the topic

Internal Link Standards per Cluster

Link Type

Minimum Count

Direction

Pillar → each spoke

1 per spoke

Downward — link from the relevant section of the pillar

Each spoke → pillar

1 per spoke

Upward — "our complete [topic] guide"

Spoke ↔ sibling spokes

2-4 per spoke

Lateral — where contextually natural

Cross-cluster bridges

0-2 per cluster

Between hubs — only with genuine topical relevance

Cluster ready to compete: Coverage > 70%, Link Health = 100%, Content Quality > 80%.

Below these thresholds, prioritize filling gaps before expecting the pillar to rank.

Step 7: Production Sequence

Order the content production for maximum impact:

• Pillar page first — even as a draft, it establishes the hub

• Highest-opportunity spokes next — pages targeting gaps with the best opportunity scores

• Refresh existing spokes — update and relink any partial-gap pages

• Remaining spokes — fill out the cluster over time

• Update pillar — add links to each new spoke as it's published

Output Format

Topic Cluster: [seed topic]

Cluster Summary

• Pillar keyword: [keyword] (volume: [x], difficulty: [y])

• Total spokes: [count]

• Existing coverage: [x]% ([n] pages exist, [n] need creation)

• Total cluster volume: [sum of all keyword volumes]

Cluster Map

[Visual structure from Step 2]

Coverage Scorecard

[Table from Step 3]

Pillar Page Spec

• Target keyword: [keyword]

• Recommended title: [title]

• Structure: [heading outline with spoke links]

Interlinking Plan

[Table from Step 5]

Production Roadmap

[Ordered list from Step 6 with estimated timelines]

Pro Tip: Use the free Blog Keyword Generator

to discover subtopics for your cluster. SEOJuice MCP users get automatic cluster mapping —

run /seojuice:content-strategy to see existing clusters with coverage metrics, or use

list_clusters and get_cluster_detail to check cluster health and identify gaps.