turnkey software

noun
UK /ˈtɜːnkiː ˈsɒftweə/
US /ˈtɜːrnkiː ˈsɔːftwer/

Software that is ready to use right away, like a toy that works as soon as you take it out of the box.

The school bought turnkey software so the teachers could start using it the same day.


OTHER MEANINGS

2. A complete system that includes all the hardware and software needed to start working.

The lab ordered a turnkey system with computers, software, and training included.

3. A business or project that is fully set up and ready for the new owner to run.

They bought a turnkey restaurant that was already furnished and staffed.

4. Software that requires little or no setup or customization before use.

For a small shop, turnkey software is easier than building a custom program.