Many aspects of mapping can be configured, but no up-front type registration is required - a mapping function is created and cached the first time two types are mapped.

Various configuration options are available:

• Static configuration (Mapper.WhenMapping) configures a default, instance-scoped mapper behind the scenes. This configures the mapper used when you call Mapper.Map(source)

• Instance configuration (mapper.WhenMapping) configures that particular instance

• Inline configuration combines the configuration of the mapper performing the mapping with the inline configuration you supply

• Class configuration splits configuration up into dedicated configuration classes.

The same API is available in all four contexts.