Upgrading the Content Delivery Web service
The Content Delivery Web service Server Role, a nonessential Server Role that ran as (part of) a Web application, has become a part of either the Content Service, a new core Server Role introduced in SDL Web 8, or, if your Content Delivery environment contains it, the Session-enabled Content Service Server Role. Either of those Server Roles can now also be a standalone microservice. How you upgrade depends on how you have the Content Delivery Web service installed now: as a Java/JSP Web application or as a .NET Web application.