Well, a payload is the carrying capacity of a packet or other transmission data unit. Technically, the payload of a specific packet or other protocol data unit also known as (PDU) is the actual transmitted data sent by communicating endpoints.
In layman’s terms: When data is sent over the internet, each unit transmitted includes both header information and the actual data being sent. The header identifies the source and destination of the packet, while the actual data is referred to as the payload. Because header information, or overhead data, is only used in the transmission process, it is stripped from the packet when it reaches its destination. Therefore, the payload is the only data received by the destination system.
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