Budget: 8000 UAH Deadline: 30 days
Hello. Experience in SEO for over 6 years.
The task is completely clear. I would compile a list of the most visited pages on the old site and create a 301 redirect map from the old URL to the new one, thus transferring the weight of the old link to the new one. It is clear that even in this situation there will be a drop in traffic, but ultimately everything should stabilize.
If no redirects are made at all, then you will lose all traffic overall.
It is best to have a call, and I will show all the nuances through screen sharing; we will also discuss any questions you may have.
Additionally, a technical audit will need to be conducted, and general recommendations will be provided.