A mountain of letters arrived at the North Pole every day.
No matter how many elves he had go through the pile, it would just grow bigger and bigger.
Santa had a team of elves write a database.
And they scanned the letters into the database.
Were they good or bad?
Governments spied on their citizens all the time.
So did big tech companies.
The elves hacked into the those databases, cross-referencing and coming up with a score.
Automating manufacturing and shipping made the holidays a breeze.
Santa kept a skeleton crew to maintain the systems, and fired the rest.