allthingsdistributed.com
All Things Distributed
Last scanned Aug 24, 2026, 1:21 PM
Overall score
Fair
Summary
Werner Vogels on building scalable and robust distributed systems. This website is hosted on AWS. SEO is good (85/100) and accessibility is fair (60/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: No H1 heading found.
Werner Vogels on building scalable and robust distributed systems
- United States
- Hosted on AWS
Top issues to fix
7 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
+1 more issue — details in the sections below.
SEO
2 issue(s) found
Performance
4 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Werner Vogels on building scalable and robust distributed systems
Meta tags
- Title
- All Things Distributed
- Description
- Werner Vogels on building scalable and robust distributed systems
- Canonical
- https://www.allthingsdistributed.com/index.html
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 13.227.249.17
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Amazon
- Subject
- allthingsdistributed.com
- Valid from
- Sep 29, 2025
- Valid to
- Oct 28, 2026
- Days until expiry
- 65
- SAN domains
- allthingsdistributed.com, www.allthingsdistributed.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 2 · H3 0
Links
26 internal · 4 external · 0 broken
Images
1 total · 1 missing alt
Scripts / Styles
4 scripts · 0 stylesheets
JS / CSS size
15.7 KB · 94.3 KB
Page size
15.8 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No H1 heading found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://allthingsdistributed.com
- Final URL
- https://allthingsdistributed.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 4 ms
- HTML size
- 15.8 KB
- Redirect chain
- https://allthingsdistributed.com
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Frequently asked questions
- What technology does allthingsdistributed.com use?
- We did not detect any specific technologies for allthingsdistributed.com in the latest scan.
- Is allthingsdistributed.com secure (HTTPS)?
- Yes. allthingsdistributed.com uses TLS 1.3 with a certificate issued by Amazon, valid until Oct 28, 2026.
- Who hosts allthingsdistributed.com?
- allthingsdistributed.com is hosted on AWS, behind CloudFront CDN.
- What is allthingsdistributed.com's SEO score?
- allthingsdistributed.com scored 85/100 for SEO in the latest analysis (great).
- What is allthingsdistributed.com's overall website score?
- allthingsdistributed.com has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card