If your looking to go down the Aglie route it might be worth finding out which setup they are/will be going to use. If your already a Prince2 shop then Prince2_Aglie is likely to be the favourite with those that have a say in these things. That said if your from an ITIL background then some around DevOps might not be a bad shout again if you think the either the company is likely to take that path or your looking to move on and take that path elsewhere.
If your company if looking to go Public Cloud (AWS/GCP/Azure) then a maybe something down that route might be useful to help give you a high level technical understanding that will effect how Service Management is done.