Strategic Objectives are smaller, short term (less than 3 years) targets that serve as stepping stones for attaining Corporate Goals.
They can often be broken down into smaller units, each one linked to the next level which ultimately leads to the attainment of the larger, more ambitious, Corporate Goals and ultimately to achieving the strategic vision.
This is akin to breaking a large, difficult to complete, task into smaller tasks that are more manageable and/or can be allocated to different people/departments.
Similarly, various levels of objectives that are linked together can be created in order to attain one or more Goals.
In addition, breaking a large objective or goal into smaller, more manageable chunks can also means that they can be directly linked to the outcomes of individual projects and/or activities.