Do SAP application modules offer a working, best practice solution for project-, program- & portfolio-management and governance?

SAP' Solution Manager should provide you all that you are looking for. SAP Solution Manager is a platform that provides the integrated content, tools, and methodologies that you need to implement, support, operate and monitor your SAP and non-SAP solutions.

SAP solution manager has templates, service desk, monitoring, reporting, and documentation capabilities. The SAP Solution Manager supports you throughout the entire life-cycle of your solutions, from the Business Blueprint to the configuration to production processing. It provides central access to tools, methods and preconfigured contents which you can use during evaluation, implementation and operational processing of your systems.

Some of it features are:

Central access to all tools for your project (Project Administration, Business Blueprint, Configuration, Test Workbench, Group Rollout templates)

Central management of all information for your Project (roadmaps, system landscape, project documentation)

Compare and synchronize customizing in different SAP components

Central System administration

Analysis of your system landscape with Service Level Reporting

Real-time System Monitoring

Business process monitoring

Access to programs and Services to monitor and optimize the performance and availability of your system landscapes, and minimize risks when running your systems

Solution support with workflow to Create and Process Problem Messages

Manage change requests, with workflow to trace and audit changes and transports in your system landscape with Change Request Management.

Hope the above information helps.