WordPress
CMS
Fastly
CDNWordPress vs Fastly (2026): Which Is Better?
WordPress and Fastly are both popular choices, but they serve different needs. WordPress is a CMS with a traditional, manual approach to building, while Fastly is a CDN that prioritises developer or designer control.
Below you'll find a side-by-side breakdown of detection signals, AI scores, and technical fingerprints — plus our honest take on which builder wins for different use cases.
How we detect WordPress vs Fastly — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
Side-by-Side Comparison
| | |
|---|---|---|
| Category | CMS | CDN |
| AI Score | 20/100 — Traditional | 10/100 — Unknown |
| Detection Signals | 11 patterns | 2 patterns |
| Script Detection | 3 patterns | — |
| CDN Detection | 1 domains | — |
| Header Detection | 2 headers | 2 headers |
| Sites Detected | 42,897 scans | No data yet |
| Best For | Blogs & content-heavy sitesTry WordPress → | Professional websitesTry Fastly → |
| Official Website | Visit | Visit |
Example Websites
WordPress
CMS
WordPress is a cms with an AI Score of 20/100 (Traditional). Our detection engine uses 11 signal patterns to identify WordPress-built sites.
Fastly
CDN
Fastly is a cdn with an AI Score of 10/100 (Unknown). Our detection engine uses 2 signal patterns to identify Fastly-built sites.
Platform Overviews
WordPress
WordPress is an open-source content management system powering everything from personal blogs to large-scale enterprise websites, making it the most widely deployed CMS on the web and a primary target for accurate fingerprinting. AIWebsiteDetector.com identifies WordPress installations using a layered set of technical signals, including 3 distinct script patterns, 2 HTML structural patterns, 2 HTTP response headers, 2 meta tag patterns, and 1 CDN domain reference — collectively providing high-confidence detection across both default and heavily customized deployments. These signals typically manifest as characteristic markup in page source, identifiable request headers returned by the server, and script references tied to WordPress core or its content delivery infrastructure. Because WordPress supports thousands of themes and plugins that can obscure surface-level indicators, the multi-signal approach ensures reliable identification even when administrators attempt to minimize the platform's visible footprint. WordPress itself is free and open-source, but hosting costs vary widely — from shared environments to managed WordPress hosting — meaning the same CMS signature can appear across dramatically different infrastructure setups, a nuance the detection engine accounts for when evaluating header and CDN patterns.
Fastly
Fastly is a high-performance edge cloud platform and content delivery network used primarily by enterprises, media companies, and high-traffic web applications that require low-latency content delivery, real-time streaming, and programmable infrastructure at scale. The platform is widely adopted by technology companies, news publishers, and e-commerce operators that demand granular control over caching and request routing at the network edge. AIWebsiteDetector.com identifies Fastly deployments by analyzing 2 distinct HTTP response headers that Fastly injects into served traffic, providing reliable, server-side signals that remain consistent across the wide variety of site types and configurations built on the platform. These header-based signals make Fastly particularly straightforward to detect programmatically, as they appear regardless of front-end framework or CMS in use, meaning the underlying CDN layer is exposed even when the application stack is otherwise obscured. Fastly operates on a usage-based pricing model with no upfront commitments, positioning it as a premium infrastructure choice that distinguishes it from shared or budget hosting environments — a characteristic that often correlates with high-traffic, performance-critical deployments in detection results.
Key Differences
- WordPress is a CMS while Fastly is a CDN — they serve different primary use cases and aren't always direct alternatives.
- WordPress scores higher on AI involvement (20/100 vs 10/100 for Fastly), meaning it relies more heavily on AI for site generation and content creation.
- Our detection engine identifies WordPress using 11 fingerprint patterns and Fastly using 2 patterns — more signals generally means more reliable detection.
Which Should You Choose?
Choose WordPress if…
- You prefer a cms solution
- You want more manual control over the final output
- WordPress's detection fingerprint of 11 signals means your site is reliably identifiable
Choose Fastly if…
- You need a cdn approach
- You prefer traditional building tools with predictable output
- Fastly's ecosystem and community better match your team's existing workflow
Our Pick — Based on 42,897+ detections
WordPress
The most frequently detected cms in our scan database.
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