Linear Probing is a collision resolution technique used in hash tables. When a new item is added and its designated slot is already occupied, linear probing searches for the next available slot in a sequential manner. This means it checks the next index, and if that is also occupied, it continues to the following indices until an empty slot is found. This method can lead to clustering, where a group of consecutive occupied slots forms, potentially increasing search time. Despite this drawback, linear probing is simple to implement and can be effective for managing hash table entries when the load factor is kept low.