Penetration Testing complements a mature and efficient Information Security process by reporting security and privacy issues in infrastructure and applications. Penetration Testing can be conducted to discover, understand, mitigate and fix potential vulnerabilities that may affect your business.
Security and privacy issues might arise only when the application is in a similar environment that it would be exposed on Internet. Penetration Testing services, in addition to Source Code Review that should be done during development of the application, is fundamental to evaluate the security of the application in the same environment and infrastructure that a real attacker would find it. That way you can eliminate a vulnerability that could be used by a threat actor to disrupt your business.