In one of the scenarios, the client migrated from WordPress to a Javascript based CMS and changed the website design. Even though visually everything looked good, in the backend the new site didn’t support meta descriptions, H1-H6 was off, schema mark-up wasn’t working, titles were changed and the trailing slash in the URLs was missing. On top of that the canonicals were incorrect and noindexes were missing. Without Mazeless it would have taken days to find those problems, but with a simple scan they were able to identify the common issues and solve them.
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In another scenario the client was migrating from WordPress to Shopify, it turned out that all the URLs were changing on their Shopify site. They had to restructure and implement a large number of 301 redirects on their Shopify store to make sure the SEO and traffic is not impacted.