It's the most flexible form of grid computing, giving you the freedom to choose the topology and networking hardware you want to use and that are most appropriate for the situation.
The TETRA crypto provides users with the freedom to choose a terminal based on their own specific needs while safeguarding the ability to communicate securely with all other users.
Many developers want the freedom to choose the most appropriate persistence strategy for their system; they don't want to be told what existing database to use.
Integrating existing applications instead of rewriting them saves you time and effort, and the ability to integrate provides the freedom for you to choose the best implementation that fits your needs.
This paper stated key points of cultivation and management from some aspects including field selection, seedling selection, field management, and harvest.