Operations is that unit (be it a division or department) or activities, of an organization that carries out the actual execution of the core operating functions.

For example:

• in a business administration context, operations is the manufacturing, delivery, and service of the products provided by the company.
• in a military context, operations are those activities that project military power. These operations can include combat, deterrence, policing, humanitarian assistance, or a combination of these tasks.

Operations are also actions that can be carried out in a mathematics context, including arithmetic operations such as addition, subtraction, multiplication, and division, as well as additional algebraic operations such as factorisation on polynomials and rational expressions

Also see

• List of military missions, operations, and projects
• Mathematics
• Arithmetic
• Algebra