implementation
This term carries a heavy professional and bureaucratic weight, often appearing in corporate strategy, government policy, or software engineering. It suggests a transition from the theoretical or conceptual stage to the practical, physical reality. It implies a sequence of steps, resources, and effort required to make an idea functional. In technical circles, it refers to the actual code written to achieve a goal. While a specification describes what a program should do, the implementation is the specific way the programmer chose to write the code to make it happen.
Countable when referring to a specific version of a technical system (e.g., a C++ implementation of a library). Uncountable when referring to the general act of executing a plan (e.g., implementation takes time).
Meanings
The process of putting a decision, plan, or design into effect.
"The implementation of the new tax law began in January."
The specific realization of a technical specification or algorithm in a software program.
"The Java implementation of the sorting algorithm is highly efficient."