SECURE, SMOOTH AND SIMPLE CONTENT MIGRATION
Your website is running great; users love it, the ROI is great, finance is happy, Marketing & Sales (sigh, never can please these folks) have a few issues, but things are fine!
Then the CxO's meet to discuss the website (yeah, trouble. For sure) and the CTO, CSO mention that the site needs urgent fixes, to future-proof and also security considerations. CMO agrees fully! (Yeah, sure, *really* worried about security)
So, you've decided that the site will be migrated. Would be great to tweak a few things while you're at it (a quite yay! from CMO). For reasons that you would understand if you spent a little more time on the site, Drupal is a great platform to migrate to. We at gai have done quite a few complex migrations and will be happy to help!