The Technical SEO & Site Health Checklist: How to Brief an Agency for Peak Performance

You’ve engaged an SEO agency to improve your site’s performance, but the gap between a vague “we need better rankings” and a structured technical SEO brief is where most engagements fail. Without a clear, risk-aware specification, you risk paying for generic audits that miss critical infrastructure issues—especially when your site runs on Google Cloud Load Balancer, where configuration errors can silently throttle crawl budget or degrade Core Web Vitals. This checklist equips you to brief an agency effectively, covering what must be included in a technical SEO audit, how to evaluate crawl allocation, and where to set boundaries against harmful tactics like black-hat links or improper redirects.

1. Define the Scope of the Technical SEO Audit

The foundation of any engagement is the technical SEO audit. Your brief must specify that the audit will cover crawlability, indexation, site architecture, and Core Web Vitals—not just a surface-level check of meta tags. For a site behind Google Cloud Load Balancer, the audit should examine how load-balancing rules affect bot access. If the load balancer terminates SSL, for example, ensure the audit verifies that HTTPS is properly handled across all subdomains and that no mixed-content warnings arise.

Key deliverables to request:

• A full crawl report (using tools like Screaming Frog or Sitebulb) with analysis of crawl budget allocation.
• A Core Web Vitals report from CrUX (Chrome User Experience Report) data, not just lab-based Lighthouse scores.
• A review of server logs to confirm that Googlebot is not being blocked or rate-limited by load-balancer configurations.

Risk callout: A misconfigured load balancer can cause Googlebot to encounter inconsistent HTTP status codes (e.g., 302 vs. 200) across different regions, leading to indexation issues. The agency must test crawl behavior from multiple geographic IPs.

2. Specify Crawl Budget Optimization Requirements

Crawl budget—the number of URLs Googlebot will crawl on your site within a given timeframe—is a finite resource. On a large site with thousands of product pages or dynamic content, poor crawl efficiency means important pages go unindexed. Your brief should require the agency to analyze and optimize crawl budget, especially if your site uses Google Cloud Load Balancer with multiple backend services.

What the agency must do:

• Identify and block low-value URLs (e.g., parameter-heavy faceted navigation, infinite scroll pages) via `robots.txt` or `noindex` directives.
• Ensure the XML sitemap is dynamically updated and submitted to Google Search Console, prioritizing canonical pages.
• Verify that the load balancer’s caching policies do not serve stale or incorrect responses to Googlebot.

Comparison table: Crawl budget factors on Google Cloud Load Balancer

3. Mandate a Core Web Vitals Remediation Plan

Core Web Vitals are now Google ranking signals, and poor scores directly impact user experience and search visibility. Your brief should require the agency to produce a detailed remediation plan for LCP (Largest Contentful Paint), FID/INP (First Input Delay / Interaction to Next Paint), and CLS (Cumulative Layout Shift). For sites on Google Cloud Load Balancer, latency introduced by backend responses can inflate LCP.

Steps the agency must follow:

1. Diagnose LCP issues by analyzing server response times, resource load order, and render-blocking scripts. If the load balancer routes traffic to a distant backend region, consider using Cloud CDN or adjusting routing rules.
2. Fix INP by auditing JavaScript execution and removing heavy third-party scripts that block the main thread.
3. Stabilize CLS by setting explicit dimensions on images and ads, and preloading fonts to avoid layout shifts.

Risk callout: Avoid aggressive lazy-loading of above-the-fold images to improve LCP—this can actually worsen CLS if layout shifts occur after load. The agency must test on real mobile devices, not just emulated views.

4. Outline XML Sitemap and Robots.txt Governance

These two files are the primary gateways for Googlebot to understand your site’s structure. Your brief must specify that the agency will audit and maintain them, with version control and change logs.

Sitemap requirements:

• Include only canonical, indexable pages (no paginated parameters, no filtered search results).
• Update automatically after any content addition or deletion.
• Submit to Google Search Console and monitor for errors (e.g., URLs returning 404 or 3xx redirects).

Robots.txt requirements:

• Block low-value directories (e.g., `/search`, `/cart`, `/login`) without blocking essential resources like CSS/JS.
• Allow Googlebot to access critical assets for rendering.
• Test the file using Google’s robots.txt tester to ensure no accidental blocking of important sections.

Risk callout: A single misplaced `Disallow: /` directive can remove your entire site from search results. The agency must implement a staging environment for testing changes before pushing to production.

5. Specify Canonicalization and Duplicate Content Handling

Duplicate content is a common issue on e-commerce sites with product variations, session IDs, or tracking parameters. Your brief must require the agency to implement a robust canonicalization strategy.

Action items:

• Apply `rel="canonical"` tags to every page, pointing to the preferred URL (e.g., `https://example.com/product` not `https://example.com/product?color=red`).
• Use 301 redirects for duplicate pages that should not exist (e.g., `www` vs. non-`www`, `http` vs. `https`).
• For Google Cloud Load Balancer, ensure that canonical URLs are consistent across all regions and that the load balancer does not introduce duplicate paths (e.g., `/us/product` vs. `/eu/product`).

Comparison table: Canonicalization approaches

6. Define Keyword Research and Intent Mapping Standards

Beyond technical fixes, your brief should specify how the agency will conduct keyword research and map search intent to content. Avoid vague “we’ll find long-tail keywords” promises. Instead, require:

• Keyword discovery using tools like Ahrefs, SEMrush, or Google Keyword Planner, with a focus on transactional and informational intent.
• Intent mapping to categorize keywords into “informational” (blog posts, guides), “navigational” (brand queries), “commercial” (comparison pages), and “transactional” (product pages).
• Content gap analysis comparing your site against top competitors for each intent category.

Risk callout: An agency that targets high-volume keywords without intent mapping will likely create content that ranks poorly because users don’t convert. For example, targeting “best SEO tools” (commercial) with a blog post (informational) fails to capture purchase intent.

7. Set Boundaries for Link Building and Backlink Profile Management

Link building remains a high-risk area. Your brief must explicitly forbid black-hat tactics such as private blog networks (PBNs), paid links, or automated outreach. Instead, require a white-hat strategy that focuses on:

• Content-based link acquisition through guest posts on authoritative domains, resource page link inserts, and broken link building.
• Backlink profile audits using tools like Majestic or Ahrefs to identify toxic links and disavow them via Google’s Disavow Tool.
• Trust Flow and Domain Authority monitoring as proxies for link quality, but with the caveat that these metrics are not Google ranking factors—they are third-party estimates.

Risk callout: A single batch of low-quality links can trigger a manual penalty. The agency must provide a monthly disavow report and explain how they verify link source quality (e.g., checking domain history, traffic, and topical relevance).

8. Require Analytics and Reporting with Actionable Insights

The final piece of your brief is the reporting structure. Avoid reports that show vanity metrics like “total backlinks” or “keyword rankings without context.” Instead, demand:

• Monthly performance dashboards linking technical fixes to changes in organic traffic, conversion rates, and Core Web Vitals scores.
• Crawl budget reports showing how many pages Googlebot crawls per day and which sections are being missed.
• Error logs from Google Search Console highlighting crawl errors, manual actions, or security issues.

Checklist for reporting:

• Organic traffic segmented by landing page and device type
• Core Web Vitals pass rate (percentage of URLs with good LCP, FID, CLS)
• Indexation coverage (indexed vs. discovered vs. excluded pages)
• Backlink growth with domain authority breakdown
• Conversion rate from organic search (if trackable)

Summary: Building a Risk-Aware Brief

A well-written brief is your best defense against wasted budget and SEO damage. It forces the agency to focus on what matters: technical infrastructure, crawl efficiency, user experience, and content relevance. By specifying deliverables like server log analysis, Core Web Vitals remediation, and white-hat link building, you separate professionals from generalists. Remember that no agency can guarantee first-page rankings or instant results—anyone who does is selling a myth. Instead, hold them accountable to measurable improvements in crawlability, indexation, and user signals. For further guidance, explore our technical SEO audit services or learn how to optimize your site for Google Cloud Load Balancer.