PA-DSS certification is a complicated procedure. However, it helps payment software vendors and payment application developers to make development process more systematic, and make sure that their products comply with data security standard requirements. Beside that, an image of a PA-DSS-certified payment application developer company makes it look more respectable in the eyes of its customers.
PA-DSS is an important data security standard to be followed by all payment application developers. PA-DSS certification is a multi-phase process, intended to make sure that all operations of payment software vendors and payment application developers are performed in compliance with the necessary data security requirements.
More information on PA-DSS certification and requirements can be found in the respective article on #Paylosophy