An external pentest is the procedure of testing your internet facing assets from the point of view of an outsider.
An internal penetration test is the process of testing your internal network of the organization.
Web App pentesting is evalute the organization web application is to be exploitable or not.
Android penetration testing is a process of finding security vulnerabilities in an android application.
Thick client pentesting is the process of evalute the desktop software or application is secure or vulnerable.
Advanced social engineering assessment and phishing services. Social engineers with expertise in email, vishing, smshing, and other techniques.