It took me quite a while to figure out what was being migrated from which source to which target. I wish the article would have provided that context, not leav

It took me quite a while to figure out what was being migrated from which source to which target. I wish the article would have provided that context, not leaving me guessing. It seems to be about migrating existing applications to another runtime environment, e.g. from on-prem Linux servers to Linux servers in the cloud.