We have been asked to look into the merging of Active Directory's and Office 365 tenancies with a company that we are in the process of merging with.
My company looks after its own AD whilst the other company is a subdomain of their old parent company. Both companies use DirSync.
Has anyone looked into merging/combining 365 tenancies? I understand we can take over their AD and there is plenty of documentation on this but this will surely have implications over the dirsync. Was curious if anyone has come across this as of yet? and What suggestions there are?
The two companies combined are about 30 thousand users.