Just as for the industrialisation of data centres, there is a historic precedent for this shift in architecture: the invention of movable type in the 15th century.
We read not in continuous narratives but by linkage, the movable type of the 21st century.
Outside of scholarly circles, the top candidate is usually the better-known Print Revolution, usually associated with Johannes Gutenberg, who helped introduce movable type to Europe.
The Printingtechnique, also called movable type printing, promoted the spread of culture significantly.
Gutenberg's invention of movable type words out of the sole possession of monastic scriveners and placed them before the wider public(Irvin Molotsky)
"It is still now, but it will soon be easily computerised. By then it will really become the fifth greatest invention of China in addition to paper making, gun powder, the compass and the movable type printing."
Record the experience for Engraving movable type, hand-printed.
By contrast, Gutenberg’s bibles – the first European book printed with movable type – were printed in the 1450’s.
A subroutine is a part of a program that can be re-used, just like movable type.