What was the basis for the creation of SPM?

[RinaKondo]

SPM is based on which best practices?
For example, ITSM is a product based on the best practice of ITIL.

[RinaKondo]

I just contacted servicenow,

Demand management is ITIL's Business Relationship management, Demand management

Project management is
PMBOK's Project management

Enterprise Agile is based on
SAFe

Goal setting and progress management is
OKR

framework for goal setting and progress management.