A page can influence a buying decision without receiving the click you expected. It may appear in an AI Overview, answer a featured snippet, earn a branded search later in the week, or be remembered after a prospect sees your company repeatedly in the results. Standard organic reporting often misses this entire layer of demand.
That creates a measurement problem. Zero-click searches, assisted conversions and keyword cannibalisation can make useful content look weak, while pages that attract easy clicks may receive too much credit. If you only judge SEO by sessions and last-click revenue, you are probably undervaluing brand-building content and misdiagnosing internal keyword competition.
The practical solution is to connect search visibility with behaviour across the full journey:
- Search impressions and query coverage
- SERP features and zero-click visibility
- Brand search growth
- Assisted conversions
- Returning visits
- Direct traffic and referral patterns
- Conversion paths in analytics and CRM data
- Keyword cannibalisation signals
- Revenue or pipeline contribution
This guide explains how to build that measurement system, how to identify seo keyword cannibalisation, and how SEO Letters can help you produce, organise and refresh content without losing control of the publishing process.
What Are Zero-Click Searches?
A zero-click search happens when a user finds enough information directly on the search results page and does not visit a website. The answer might appear in a featured snippet, knowledge panel, local pack, image result, video panel, People Also Ask box or AI-generated search summary.
The user still sees your brand, expertise or product. They simply do not create a conventional organic session.
That distinction matters. A searcher looking for “what is technical SEO” may be satisfied by a short definition in the results. Someone searching for “best technical SEO platform for an international ecommerce site” is more likely to click, compare options and submit an enquiry. Both searches can contribute to commercial value, but they do so at different stages.
Common Zero-Click Search Formats
| Search feature | Typical user behaviour | Potential business value |
|---|---|---|
| Featured snippet | Reads a direct answer without clicking | Builds topical authority and brand familiarity |
| People Also Ask | Expands related questions | Increases visibility across a topic cluster |
| Knowledge panel | Checks a company, person or entity | Supports trust and brand validation |
| Local pack | Compares nearby businesses | Generates calls, directions and offline visits |
| AI search summary | Consumes a synthesised answer | Can influence consideration before a later visit |
| Product results | Reviews product information and prices | Supports product discovery and comparison |
| Video result | Watches an explanation in the SERP | Creates assisted demand and brand recall |
| Image result | Finds visual information or assets | Supports discovery in design, retail and visual sectors |
A zero-click impression is not automatically a conversion. It is an exposure signal. The challenge is determining when those exposures produce later action.
Why Organic Clicks Are an Incomplete SEO KPI
Clicks remain important. You need qualified traffic, engaged sessions and landing-page conversions. The issue is that clicks are often treated as the entire value of an organic result, which creates a narrow and sometimes misleading reporting model.
Imagine a B2B software company publishing an in-depth guide on content operations. The guide ranks for broad informational terms and receives 2,000 impressions but only 70 clicks. On the surface, it looks inefficient. Yet the company also notices:
- Branded searches increase by 18% over the following month.
- Visitors who first saw the guide return through a product comparison page.
- Several assisted conversions include the guide in the first three interactions.
- Sales representatives mention that prospects recognise the company during calls.
- The page supports internal links to commercial pages that convert later.
The content may be doing useful work before the click. Search visibility is functioning as a demand-generation asset, not just a traffic source.
The Three Layers of Search Value
A more complete model separates search value into three layers:
-
Visibility value
- Impressions
- Ranking coverage
- SERP feature ownership
- Brand mentions
- Presence across related queries
-
Engagement value
- Organic clicks
- Returning users
- Assisted landing-page visits
- Branded search activity
- Content depth and interaction
-
Commercial value
- Leads
- Pipeline
- Purchases
- Assisted conversions
- Customer retention or expansion
This whole thing becomes easier to interpret when you stop forcing every page into the same KPI category. A glossary page, product comparison page and case study do not have identical jobs.
Zero-Click Visibility and Brand Demand
Repeated visibility can increase brand demand even when the user does not click immediately. This is particularly common in high-consideration purchases, where people search several times, compare providers and revisit trusted brands before converting.
A user might see your site for:
- “best content automation software”
- “SEO article workflow tools”
- “how to scale blog publishing”
- “SEO Letters alternatives”
- “automated content refresh process”
The first searches may be informational. Later, the user searches your brand directly or navigates to your site from a saved link. If your reporting only credits the final direct session, the earlier search visibility disappears from the analysis.
Signals That Zero-Click Visibility Is Creating Demand
Look for changes in the following areas:
- Growth in branded impressions in Google Search Console
- More searches containing your company or product name
- Higher direct traffic after publishing a major content cluster
- More returning users from non-converting informational pages
- Increased conversion rates among users exposed to multiple organic pages
- Better close rates for leads with organic touchpoints
- Rising branded search volume in geographic markets where content has expanded
These signals do not prove causation on their own. Seasonality, public relations, paid media and competitor activity can affect demand as well. Still, when several indicators move together, the pattern is worth investigating.
Assisted Conversions: The Missing Middle of the Customer Journey
An assisted conversion occurs when a channel or page contributes to a conversion without receiving the final conversion credit. In an organic search journey, this might look like:
- A prospect reads an educational article from Google.
- They return a week later through a branded search.
- They view a product page.
- They submit a form after clicking a remarketing advert.
Last-click reporting may assign the conversion to paid media or branded search. The educational article is treated as incidental, even though it introduced the company and shaped the decision.
A Simple Assisted Conversion Example
Suppose a user follows this path:
| Interaction | Channel | Page or action |
|---|---|---|
| First visit | Organic non-brand | “How to measure zero-click searches” |
| Second visit | Organic brand | Product overview |
| Third visit | Direct | Pricing page |
| Conversion | Direct | Demo request |
A last-click model gives all the credit to direct traffic. A linear model may assign one-third of the credit to each interaction. A position-based model gives greater weight to the first and final interactions.
No model is perfectly objective. Each one is a useful lens with limitations.
Useful Assisted Conversion Metrics
Track these metrics by page, topic cluster and query group:
- Assisted conversion count
- Assisted conversion rate
- First-touch organic conversion rate
- Organic-influenced pipeline
- Time from first organic interaction to conversion
- Number of organic touchpoints before conversion
- Conversion rate for returning organic users
- Revenue per organic-assisted user
- Percentage of conversions with an informational first touch
In GA4, explore conversion paths and path exploration reports. In a CRM, capture the original source, first landing page, latest source and content interactions. The data will not always join cleanly, so document your attribution rules and keep them consistent.
How Keyword Cannibalisation Distorts Zero-Click Measurement
Keyword cannibalisation occurs when multiple pages from the same website compete for the same keyword or closely related search intent. This can split impressions, clicks, rankings and SERP features across URLs.
The result is often misunderstood. You may see several pages ranking for a term and assume the site has strong coverage. In reality, Google may be uncertain about which page should rank. The pages can rotate, dilute authority and weaken the site’s ability to own a featured snippet or answer result.
SEO Keyword Cannibalisation Versus Healthy Topic Coverage
Not every overlap is harmful. A site can have several pages that mention the same phrase while serving clearly different purposes.
| Situation | Likely interpretation | Recommended action |
|---|---|---|
| One guide ranks for an informational query and one product page ranks for a transactional query | Healthy intent separation | Keep both, strengthen internal links |
| Two guides answer the same question with similar depth | Possible cannibalisation | Consolidate or assign distinct angles |
| A category page and blog post alternate rankings | Intent ambiguity | Clarify page purpose and internal linking |
| Several pages rank for branded product terms | Could be useful or confusing | Review SERP appearance and conversion data |
| Old and new articles target the same keyword | High cannibalisation risk | Merge, redirect or refresh one page |
| Regional pages use identical copy with minimal local differences | Possible duplicate content SEO issue | Add genuine local value or consolidate |
The important question is not simply, “Do several URLs rank?” Ask, “Which URL best satisfies the search intent, and is Google consistently selecting it?”
Search Intent Overlap
Search intent overlap appears when two pages target different wording but satisfy the same underlying need. For example:
- “how to track assisted conversions”
- “measuring organic assisted conversions”
- “SEO content attribution guide”
These may look like separate keywords in a spreadsheet. To a user, they could represent one broad informational task. Producing three near-identical articles may create internal keyword competition rather than additional reach.
Search intent should be evaluated through:
- The current top-ranking URLs
- SERP features
- Content formats
- Common subtopics
- User questions
- Conversion stage
- Page type
- The level of expertise expected
A keyword tool alone cannot resolve this. You need SERP analysis and a clear content architecture.
A Framework for Measuring Content Value Beyond Clicks
Use the following process each month or quarter. It is designed for teams that need a repeatable system, not a one-off report.
Step 1: Classify Pages by Search and Business Intent
Create a page inventory and assign each URL a primary role:
- Informational education
- Problem awareness
- Commercial investigation
- Product comparison
- Transactional conversion
- Brand validation
- Customer support
- Retention or expansion
Then record the primary topic, target audience, funnel stage and intended conversion action. If a page has no identifiable role, that is already a useful finding.
Step 2: Group Keywords by Topic and Intent
Do not measure every keyword in isolation. Build groups around the underlying need.
For this topic, useful groups may include:
- Zero-click search measurement
- Assisted conversion tracking
- Organic attribution
- Search visibility reporting
- SEO keyword cannibalisation
- Internal keyword competition
- Duplicate content SEO
- Content performance measurement
Assign each group a primary URL. Secondary pages can support the topic, but they should have a distinct purpose. This reduces ambiguity in your content plan.
Step 3: Capture Visibility Metrics
Use Google Search Console and a rank-tracking platform to capture:
- Total impressions
- Clicks
- Average position
- Click-through rate
- Query count
- Branded versus non-branded impressions
- SERP feature appearances
- URL-level ranking changes
- Impressions by country and device
A falling click-through rate is not always a content failure. If impressions increase because your page appears in a prominent answer feature, the relationship between visibility and clicks may change.
Step 4: Track Brand Demand Separately
Create a branded query segment that includes:
- Company name
- Product names
- Brand misspellings
- Product plus category terms
- Brand plus competitor terms
- Brand plus review or pricing terms
Monitor branded impressions, clicks and average position over time. A growing branded query set can suggest that content is increasing awareness, especially when paid activity and PR remain stable.
Step 5: Connect Search Data to Analytics
In GA4, monitor:
- Organic landing pages
- Engaged sessions
- Returning users
- Key events
- Conversion paths
- Assisted conversions
- Time between first visit and conversion
- Organic users who later convert through another channel
Use content groups to compare page types. An informational guide may have a lower direct conversion rate but a higher assisted conversion rate than a product page.
Step 6: Connect Analytics to CRM Outcomes
For lead-generation businesses, form submissions are not enough. Import or reconcile:
- Marketing-qualified leads
- Sales-qualified leads
- Opportunities
- Closed-won revenue
- Average sales cycle
- Customer segment
- Original organic landing page
- Pages viewed before conversion
A page that generates fewer leads but more qualified opportunities may be strategically stronger. That is why content reporting should include pipeline quality, not just volume.
Step 7: Run a Cannibalised Keywords Audit
A useful cannibalised keywords audit should identify where multiple URLs compete for the same query or intent.
Use this process:
- Export ranking keywords and associated URLs.
- Group rows by keyword and close variants.
- Highlight terms with two or more ranking URLs.
- Compare clicks, impressions and conversions by URL.
- Review whether each page serves a different intent.
- Check ranking volatility across recent weeks.
- Inspect internal links and anchor text.
- Decide whether to consolidate, differentiate, redirect or leave the pages unchanged.
Do not merge pages automatically. A consolidation can remove useful long-tail coverage if the pages serve genuinely different audiences.
A Scoring Model for Hidden Content Value
When you need to prioritise content improvements, score each page across visibility, engagement and commercial influence.
| Measurement area | Weight | Example indicators |
|---|---|---|
| Search visibility | 25% | Impressions, ranking coverage, SERP features |
| Brand demand | 15% | Branded query growth, direct traffic lift |
| Engagement | 15% | Engaged sessions, returning users, depth |
| Assisted conversions | 25% | Influenced leads, conversion paths, pipeline |
| Strategic relevance | 10% | Topic authority, commercial importance |
| Content health | 10% | Freshness, links, technical quality |
Score each category from 1 to 5. Multiply by the weighting and record the total.
A page with high impressions, low clicks and strong assisted conversion influence may deserve optimisation rather than deletion. Another with low impressions, no conversion role and severe intent overlap may be a consolidation candidate.
Example Content Value Scoring
| Page | Visibility | Brand demand | Assisted conversions | Cannibalisation risk | Action |
|---|---|---|---|---|---|
| Broad educational guide | 5 | 4 | 5 | 2 | Improve snippet and internal links |
| Similar older article | 2 | 1 | 1 | 5 | Consolidate or redirect |
| Product comparison page | 3 | 3 | 4 | 2 | Strengthen proof and conversion path |
| Thin glossary page | 3 | 1 | 1 | 4 | Expand, merge or remove |
This rubric is not a substitute for judgement. It gives your team a shared way to discuss trade-offs.
How to Interpret Low Click-Through Rates
A low CTR can indicate several different problems:
- The title does not match the query.
- The page ranks below stronger competitors.
- The search is satisfied by a SERP feature.
- The result appears for an irrelevant query.
- The brand lacks recognition.
- The page is visible for broad awareness terms.
- Multiple URLs are splitting impressions.
- The searcher needs information but is not ready to click.
Look at CTR alongside position and search feature data. A page ranking in position two with a low CTR needs a different response from a page ranking in position nine with a low CTR.
Optimisation Actions by Scenario
| Scenario | What it may suggest | Action |
|---|---|---|
| High impressions, low CTR, position 1 to 3 | Strong zero-click competition | Improve title, snippet clarity and supporting content |
| High impressions, low CTR, position 8 to 15 | Ranking weakness | Upgrade depth, links, evidence and intent alignment |
| Multiple URLs share impressions | Cannibalisation | Clarify the primary URL or consolidate |
| High CTR, low conversion rate | Intent or landing-page mismatch | Improve next step, offer and page relevance |
| Low clicks, high assisted conversion rate | Valuable early-stage content | Preserve, expand internal pathways |
| Rising branded searches after publication | Growing brand demand | Build related commercial content and remarketing audiences |
The page title is only one part of the result. Structured data, site reputation, search intent and the quality of the answer all shape performance.
Duplicate Content SEO: What Actually Matters
Duplicate content SEO is often overstated. Having similar wording across pages does not automatically create a penalty. Search engines generally try to select a representative version of substantially similar content.
The commercial problem is usually more practical:
- Authority signals may split across URLs.
- Internal links may point to different versions.
- Rankings can become unstable.
- Users may land on the wrong page.
- Reporting becomes harder to interpret.
- Content maintenance becomes inefficient.
Near-duplicate articles are particularly risky when they target the same audience, query family and conversion stage. A site with ten slightly different posts about “SEO content measurement” may appear productive in a content calendar while adding little distinct value.
What to Do With Overlapping Pages
Choose one of these actions:
- Consolidate: Combine the strongest material into one authoritative resource.
- Redirect: Point the weaker or redundant URL to the primary page.
- Differentiate: Give each page a genuinely different audience, use case or intent.
- Canonicalise: Signal a preferred version where appropriate, while remembering that canonical tags are hints.
- Refresh: Update one page and reduce the scope of the other.
- Leave unchanged: Keep both pages when data shows different intent and useful performance.
Document the decision. Six months later, the reason matters.
Building an Assisted Conversion Dashboard
A useful dashboard should bring together visibility and outcomes without pretending attribution is perfectly precise.
Recommended Dashboard Sections
1. Search Visibility
Include:
- Non-branded impressions
- Branded impressions
- Clicks
- CTR
- Average position
- SERP feature appearances
- Ranking distribution
- Visibility by topic cluster
2. Content Engagement
Include:
- Engaged sessions
- Returning visitors
- Scroll depth, where reliable
- Downloads or tool interactions
- Internal click-through rate
- Newsletter or account registrations
3. Conversion Influence
Include:
- First-touch conversions
- Last-touch conversions
- Assisted conversions
- Influenced pipeline
- Revenue by first organic page
- Number of content interactions before conversion
4. Cannibalisation Health
Include:
- Keywords with multiple ranking URLs
- Ranking volatility
- URL switches
- Query groups without a clear primary page
- Pages with overlapping titles and headings
- Internal links pointing to competing URLs
A dashboard should support decisions. If a metric cannot lead to an action, reconsider its place.
Practical Scenario: A B2B SaaS Content Cluster
A B2B software company creates three pages:
- “What Are Zero-Click Searches?”
- “How to Measure Zero-Click Search Visibility”
- “SEO Reporting Software for Content Teams”
The first page earns broad impressions and a featured snippet. The second receives fewer impressions but produces the highest number of assisted demo journeys. The third receives the most direct conversions.
A weak report would call the first page a failure because its direct conversion rate is low. A stronger report recognises the roles:
- Page one creates initial awareness.
- Page two develops measurement intent.
- Page three captures commercial demand.
The internal linking structure should move users from education to implementation to product evaluation. Anchor text should be descriptive and natural, and each page should maintain its own intent.
Now imagine a fourth article appears, titled “Measuring Zero-Click SEO Results”. It competes with page two for the same queries. That may create internal keyword competition and split the very visibility the cluster was designed to build.
The answer is not automatically to publish more. Review the SERPs and consolidate if the fourth page adds no distinct value.
How SEO Letters Supports Content Value Measurement
Producing a measurable content system requires more than generating isolated articles. You need keyword research, topic architecture, competitor analysis, internal linking, publishing discipline and regular refreshes.
## Build a Repeatable SEO Content Workflow with SEO Letters
SEO Letters supports that workflow by helping you move from a keyword to a structured, publishable article. It can assist with:
- Keyword research and difficulty ratings
- Topic clusters and topical authority planning
- Competitor and site-gap analysis
- Structured articles with headings and internal links
- Schema recommendations
- Brand-tuned writing
- Product-aware content for affiliate and ecommerce sites
- Direct publishing to WordPress, Shopify and webhooks
- Multi-language generation across 21 languages
- Content performance monitoring
- Scheduled campaigns and content refreshes
The important distinction is operational. You can define a topic, cadence and destination, then let the platform handle much of the research, drafting and publishing workflow while you review strategy and quality.
That is especially useful when you are managing multiple content clusters and need to keep older pages current. A refresh campaign can identify material that needs updating instead of adding another article to an already crowded topic.
Route Different Workflow Stages to the Right Model
SEO Letters lets you bring your own AI keys and route stages to Gemini, OpenAI or Claude. That gives teams more control over workflow design, cost management and model selection.
You might use one model for outlining, another for drafting and a third for editing or multilingual adaptation. The exact configuration depends on your quality standards, publishing volume and review process.
Human oversight still matters. Review factual claims, commercial language, internal links, brand suitability and any regulated subject matter before publication.
Use Content Clusters to Reduce Cannibalisation
A content cluster should have a clear central theme and a controlled set of supporting pages. Each page needs a defined job.
A Strong Cluster Map Includes
- Primary topic
- Supporting subtopics
- Search intent
- Target audience
- Funnel stage
- Primary URL
- Supporting URL
- Internal link destination
- Conversion event
- Refresh date
- Cannibalisation risk
For example, a cluster about organic attribution might contain:
- A foundational guide to assisted conversions
- A technical GA4 implementation page
- A CRM attribution workflow
- A comparison of attribution models
- A commercial page for SEO reporting software
These pages overlap semantically, which is normal. They should not repeat the same answer in slightly different language.
## Map Topic Clusters and Control Keyword Cannibalisation with SEO Letters
The platform’s cluster planning and site-gap capabilities can help you identify missing topics and unnecessary duplication before your team commits to a large publishing schedule. That planning layer is valuable because cannibalisation often begins in the content calendar, long before it becomes visible in ranking reports.
A Monthly Measurement Process for SEO Teams
Use this operating rhythm to keep the system manageable.
Week One: Visibility Review
- Export Search Console data by query and page.
- Compare branded and non-branded impressions.
- Review new SERP feature appearances.
- Identify pages with high impressions and weak CTR.
- Flag pages where ranking URLs have changed.
Week Two: Conversion Review
- Inspect GA4 conversion paths.
- Compare first-touch and last-touch organic performance.
- Review assisted conversions by page and topic.
- Connect important leads to CRM outcomes.
- Note time lag between first organic interaction and conversion.
Week Three: Cannibalisation Review
- Run the cannibalised keywords audit.
- Check pages competing for the same search intent.
- Review internal anchor text and links.
- Inspect titles, H1s and content similarity.
- Assign consolidation, differentiation or refresh actions.
Week Four: Publishing and Refresh Planning
- Select new topics based on genuine content gaps.
- Prioritise pages with high commercial influence.
- Schedule updates for ageing content.
- Remove or merge redundant drafts.
- Publish through a controlled workflow.
- Record the expected KPI for every new page.
SEO Letters can support the recurring parts of this process through campaign scheduling and refresh workflows. You still decide the strategic priorities, but the production layer becomes more consistent.
What Not to Do
Several common measurement habits create misleading conclusions.
Do Not Treat Every Impression as a Conversion
Visibility is valuable, but an impression alone does not demonstrate revenue impact. Use language such as “influenced”, “associated with” or “correlated with” unless you have a robust experimental design.
Do Not Delete Pages Solely Because They Have Few Clicks
A page may influence branded searches, assisted conversions or later commercial visits. Check the full journey first.
Do Not Merge Every Overlapping Article
Some pages share keywords but satisfy different needs. Review intent, audience and conversion stage before consolidation.
Do Not Use Last-Click Reporting as the Only Source of Truth
Last-click is easy to understand, but it systematically favours the final interaction. Pair it with first-touch, linear or position-based views.
Do Not Publish More Pages to Solve Every Ranking Problem
More content can increase internal keyword competition. Fix architecture, quality and intent alignment before expanding the cluster.
Do Not Ignore Offline Conversions
Phone calls, sales conversations, retail visits and assisted purchases may not appear in standard web analytics. Use call tracking, CRM fields, surveys and sales feedback where appropriate.
Expert Interpretation: What Good Content Value Looks Like
High-value content does not always produce the highest traffic. It usually performs a strategic function that can be observed through several connected signals.
A strong awareness page may:
- Own broad informational queries
- Earn answer features
- Increase branded search behaviour
- Introduce the brand to relevant prospects
- Pass authority through internal links
- Assist later conversions
A strong commercial page may:
- Rank for comparison and product queries
- Attract fewer but more qualified visitors
- Support sales conversations
- Convert directly
- Influence pipeline value
A mature SEO programme needs both. Removing awareness content because it does not convert on the first visit can weaken the commercial pages that depend on it.
Key Takeaway
Measure content as part of a connected search journey. Clicks matter, but they are one observable action inside a larger system that includes visibility, recall, return visits and assisted outcomes.
Final Framework: From Zero-Click Exposure to Revenue Insight
Use this framework when presenting content performance to stakeholders:
-
Identify the exposure
- Which queries, topics and SERP features showed the brand?
-
Classify the intent
- Was the user researching, comparing, validating or ready to buy?
-
Find the primary page
- Is Google consistently selecting the URL you intended?
-
Check for cannibalisation
- Are multiple pages competing for the same search intent?
-
Measure behaviour
- Did users return, visit commercial pages or interact with conversion assets?
-
Review assisted outcomes
- Did the content appear in conversion paths or influence pipeline?
-
Compare branded demand
- Did brand searches rise after the content gained visibility?
-
Choose an action
- Improve, consolidate, differentiate, refresh, internally link or leave unchanged.
-
Record the baseline
- Save the date, KPI definitions and attribution model.
-
Review after a suitable interval
- Search performance and B2B conversion journeys often need weeks or months to produce a clear pattern.
A disciplined approach stops your team from chasing click volume without understanding intent. It also gives zero-click content a fair evaluation, while still demanding evidence of strategic value.
## Automate Your Blog Writing and Content Refresh Campaigns with SEO Letters
SEO Letters is built for teams that publish for a living. It combines research, topic planning, structured article generation, internal linking, schema, images, publishing integrations and scheduled campaigns in one workflow.
That matters when you are trying to reduce seo keyword cannibalisation, maintain topical authority and produce content that supports measurable business outcomes. Instead of moving drafts between disconnected tools, you can create a repeatable publishing operation with content generation and refreshes running on a defined cadence.
Conclusion
Zero-click searches are changing how organic visibility creates value. A searcher can encounter your expertise, remember your brand and convert later without ever clicking the original result.
That does not mean clicks are irrelevant. It means the reporting model needs to include the wider journey.
Track impressions, SERP features, branded demand, returning users, assisted conversions and CRM outcomes together. At the same time, audit search intent overlap and internal keyword competition so your content assets reinforce one another instead of competing for the same visibility.
If you are building a larger publishing operation, use a platform that connects strategy with execution. Explore SEO Letters at app.seoletters.com and use the rightbar as the contact path if you need help shaping a content workflow around zero-click measurement, assisted conversions and safer keyword architecture.
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