Source: wikibot/system-service-descriptor-table
= System Service Descriptor Table
{wiki=System_Service_Descriptor_Table}
The System Service Descriptor Table (SSDT) is a critical data structure used in the Windows operating system. It acts as a lookup table for system calls from user mode applications to kernel mode services. Here are some key points about it: 1. **Purpose**: SSDT maps system call indices to their corresponding kernel functions.