GMP Detox SW development GAMP - Does Computer System Validation improve Software Quality?

According PIC/S PI 011
Supplier Audits
ISPE GAMP 5 history
Testing phases at supplier site and end users
Unit / Integration / System and Acceptance Testing
Validation and SDLC (Software Development Life Cycle)
SDLC methodologies (e.g. CMMI, Scrum etc.)
Using tools during validation (i.e. Atlassian)
Internal Quality Management System for Software Development