👉 Postcard computing is an innovative approach to distributed computing where individual computers, often referred to as "postcards," act as autonomous agents that can perform computations and share results with one another over a network. Each postcard, typically a small file containing instructions and data, is sent to a neighboring node, which executes the instructions and sends the results back as another postcard. This process continues across the network, allowing for parallel processing and distributed problem-solving without the need for a central server. The term "postcard" originates from the physical postal system, where small, portable messages were used to relay information. Postcard computing is particularly useful for tasks like data aggregation, distributed filtering, and collaborative problem-solving, as it leverages the collective power of many interconnected devices to achieve computational goals efficiently and robustly.