If a company subcontracted work, it paid another company to do part of the work.
Subcontracted work can make people think of businesses working together and getting help from each other.
Examples:
The company subcontracted the hard parts of the job.
We subcontracted the cleaning to another company.
She subcontracted the painting to a different group.
I subcontracted the cooking to my little brother!
The superhero subcontracted the fighting to his sidekick.
They subcontracted the building to a team of experts.