I'm porting over some code and noticed code such as Services.MemberService.Create Services.MemberService.Delete This shows up in Umbraco 8 but in Umbraco 10 I can't find the relevant upgrade path to convert this code? Does the Service no longer exist or should I just inject IMemberService or is there another way? Thanks

Yes you probably need to inject IMemberService

csharp
var member = _memberService.CreateMember(userName, accountDetails.Email, userName, Member.ModelTypeAlias);