1.
@NDEMOOR
LIVING ON THE EDGE
Eleva3ng your SEO toolkit to the CDN
NILS DE MOOR // WOORANK //
SLIDESHARE.NET/NDEMOOR

2.
The Rise of the CDN

3.
Source: Cloudflare

4.
Source: Cloudflare

5.
Origin ServerCDN NodeBrowser

6.
Origin ServerBrowser CDN Node
?

7.
Origin ServerBrowser CDN Node

8.
Origin ServerBrowser CDN Node
?

9.
Origin ServerBrowser CDN Node
?

10.
Origin ServerBrowser CDN Node
?
?

11.
Origin ServerBrowser CDN Node

12.
Source: Cloudflare

13.
Speed
Bring content closer to the user

14.
Cost
Data doesn’t travel as much
Less bandwidth = Less cost

15.
Reliability
Increased Redundancy

16.
Security
SSL out of the box
DDoS mitigation

17.
Typically used to cache static file types

18.
CONTENT DELIVERY NETWORK

19.
CONTENT DELIVERY NETWORK

20.
Origin ServerBrowser
Worker
CDN Node

21.
Worker
addEventListener('fetch', event => {
event.respondWith(fetchAndApply(event.request))
})
async function fetchAndApply(request) {
if (request.headers.get('user-agent').includes('annoying_robot')) {
return new Response('Not cool, bro! :(',
{ status: 403, statusText: 'Forbidden' })
}
return fetch(request)
}

22.
"SERVERLESS"

23.
"SERVERLESS"

24.
Source: Cloudflare
"EDGE COMPUTING"

25.
"EDGE COMPUTING"

26.
EDGE COMPUTING
SEO
@TaylorDanRW

27.
But why?
Platform
Restrictions
Release
Management
Performance

28.
Release
Management
Performance

29.
Platform
Restrictions

30.
Release
Management

31.
Some examples

32.
addEventListener('fetch', event => {
event.respondWith(handleRequest(event.request));
})
async function handleRequest(request) {
let path = request.path;
let response = await fetch(request);
response = new Response(response.body, response);
response.headers.set('Link',
'https://example.com' + path + '; rel="alternate"; hreflang="en",' +
'https://fr.example.com' + path + '; rel="alternate"; hreflang="fr",' +
'https://de.example.com' + path + '; rel="alternate"; hreflang="de"'
);
return response;
}
hreflang

33.
Modify robots.txt
addEventListener('fetch', event => {
event.respondWith(modifyRobots(event.request))
})
async function modifyRobots(request) {
if (request.path == "/robots.txt") {
return Response.write(
"User-agent: *
Disallow: /my-secret-collection"
)
}
return fetch(request)
}

34.
addEventListener('fetch', event => {
event.respondWith(bulkRedirects(event.request))
})
const redirects = new Map([
["https://example.com/redirect1", "https://google.com"],
["https://example.com/redirect2", "https://bing.com"]
])
async function bulkRedirects(request) {
let location = redirects.get(request.url)
if (location) {
return Response.redirect(location, 301)
} else {
return fetch(request)
}
}
Redirect

35.
Security
. . .
response.headers.set('x-frame-options', 'DENY');
response.headers.set('Strict-Transport-Security',
'max-age=31536000; includeSubDomains'
);
. . .

36.
Origin ServerBrowser
Worker
CDN Server
Access Logs
"GET /sample-image.png HTTP/2" 200 1479
"GET /style.css HTTP/2" 200 239
. . .

37.
A/B Testing

38.
Edge SEO Toolbox

39.
Great Power = Great Responsibility
Change
Management
Security
&
Compliance
Debugging Accountability

40.
@ndemoor #brightonSEO

41.
Credits
pexels.com
unsplash.com
cloudflare.com
aws.amazon.com/lambda/edge/
trends.google.com/trends
www.ebay.com/itm/Sun-Type-5-Mechanical-Mouse-with-mouse-pad-p-n-370-1586-/392043118523
www.adpushup.com/blog/9-common-mistakes-that-will-kill-your-ab-testing/
Icons made by Freepik from www.flaticon.com