Overview of Layers
TipThe Interacting With Layers sample, in the Developer’s Guide samples, demonstrates concepts from this chapter.

Layers represent vector data, raster data, and drawing data in a map. Each type of layer has unique characteristics.

NoteThe word layer has different meanings in different contexts. A layer can refer to the layer definition in the resource repository, and it can also refer to the map layer. For the purposes of the Web Tier, a layer refers to a map layer, and a layer definition refers to the layer definition in the resource repository.

#### Topics in this section

- Basic Layer Properties
- Layer Groups
- Layer Style
- Layer Visibility