Advanced semiconductor packaging is the technology used to connect multiple computing components so they work together as a tightly integrated system.
Traditional packaging mainly protected a finished chip and connected it to a circuit board. Modern high-performance systems need packaging to do much more: connect processors, high-bandwidth memory, chiplets and other components with very short, fast electrical paths.
This matters especially for artificial intelligence. Training and running large AI models requires enormous amounts of data to move quickly between computing cores and memory. A fast processor can sit idle if data cannot reach it quickly enough.
Advanced packaging can place different components close together, sometimes side by side and sometimes stacked vertically. This reduces the distance signals travel and can improve bandwidth and energy efficiency.
TSMC's 3DFabric family, for example, includes technologies such as CoWoS, InFO and SoIC that combine different forms of advanced packaging and three-dimensional integration.
Chiplets are another important idea. Instead of building one very large chip, designers can combine several smaller specialised chips in one package. That can improve manufacturing flexibility and allow different functions to use different production technologies.
Packaging does not replace chip fabrication. The quality of the processor, memory, software and cooling system still matters. But as individual chips become harder and more expensive to scale, packaging has become a major part of performance.
This is why news about new AI data centres or accelerators increasingly mentions packaging capacity. A shortage of advanced packaging can limit how quickly high-end AI hardware reaches the market even when processor designs are ready.