Interview With Simon Cox: Migrating Sites Like A Pro

Crawling the site several times with different tools to form a full picture. Access to Google Search Console Data, Analytics data and server logs is also vital to understand the URLs that are being consumed. I create maps of all the content first.

I like to map ALL urls in a site and all URLs know to the search engines. Sometimes I even map out the URLs that used to be on a site and are no longer active by pulling them out of archive.org. Then I sort through and decide what to redirect and what to allow to die (404). As well as pages and pdfs this could also include images.

I use the GInfinity Chrome ext to list all site: URLs then a Chrome bookmark script @cognitiveSEO do a good one, to scrape the actual URLs ready for the spreadsheet - where i discover content missing from the crawls

After a migration I monitor site health on a daily basis for at least two weeks - sometimes longer. There are always little bits that need caulking - often not necessarily SEO related but have impact on-site content performance.
Although we now have GSC Domain Properties, I pull the data into Google Sheets to monitor progress and share it with clients.

Hardcoded internal fully qualified links. It can be hard to spot as crawlers will append the domain to any relative link so spotting the full urls in a link is tricky! Its why you need to crawl immediately the site is launched.

I always do a crawl immediately at launch and usually have a preprepared checklist to go through. Includes a list of the links I am expecting to redirect to their new location.

I get called in after migrations because traffic has tanked! If non-SEO's read this please call me before you migrate! Most common issue has been a total lack of redirects and planning.

Brand and domain change in 3 days over a weekend because of threatened legal action. Actually, the brand change was a lot of fun, though very little sleep especially for the design team - new logos etc. The owner was really worried he was going to get sued by a very large corp - which is exactly what they wanted.

We assumed there would be a lot of sweeping up in the following weeks - probably was with stationery, business cards etc. but for the site we pretty much nailed it.

Also 1 job where I added hreflang to thousands of pages through a CMS process as no dev resource available for at least a year.

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