The order is called the execution of the actions under a coordinated form.
The word "order" has different meanings, all of which refer to the idea of coordination, joint or pre-agreed action, succession and the establishment of a scenario of harmony and balance.
If you speak of "giving an order", you are referring to giving an instruction, often mandatory, regarding an action to be carried out. The orders are usually related to hierarchical dispositions and must be followed by those individuals of a lower degree.
In computing, orders are those instructions that one instance commands another for their execution.
Furthermore, when a programmer develops a software or application, he also gives it a series of commands to act or react in this or that way when the user selects an option or activates a command. The program defaults to responding one way each time the same command is activated.
In short, all the components of a computer system are interconnected with each other for the purposes of giving and receiving orders for their correct operation.