Those are just factors of AS. By the book, AS refers to the total value of goods and services that are available for sale in an economy over a set period. Basically:
Factors affecting the quantity and quality of productive resources and their availability – As this factor increases, firms can increase supply. For example, if there a discovery of resources that firms have more access to those resources. However, if there is a drought than firms in the agricultural market will struggle to supply goods and services.
Factors affecting the costs of production and profits – If production costs are lowered, or profits are increased then firms will be more willing to supply goods and services. This is due to firms wanting to make as much profit as they can, so when costs are at their minimum, they will capitalise.
Factors affecting efficiency and productivity – As efficiency and productivity increase, firms are more able to increase supply. Advances in technology might allow productivity per hour worked to boost, which also lowers the average costs per unit.