There are probably tons of baked in URLs or platform assumptions that are very easy to break during their core migration to Azure.
ISTR that the lift-n-shift started like ... 3 years ago? That much of it was already shifted to Azure ... 2 years ago?
The only thing that changed in the last 1 year (if my above two assertions are correct (which they may not be)) is a much-publicised switch to AI-assisted coding.