Packet loss is the failure of data packets to reach their intended destination over the Internet or network. It is expressed as a percentage (%) of packets that were sent but not received. In most cases, it is due to network congestion, hardware failure, or other issues, leading to these packets being lost. This can have a significant impact on the quality of service (QoS), including delays, jitter, and other issues with network applications. In some cases, packet loss can be addressed by using protocols that detect and retransmit lost packets, while in other cases, it may require more advanced techniques. Network optimization or congestion control to address the underlying issues causing the loss or having a dedicated connection can mitigate data loss. Packet Loss is also known as Lost Data Packets.