Image output is about determining the color or bands and indices you want to obtain in order to gain valuable information about your AOI.
When tasking a satellite, there are multiple options available:
Multispectral outputs are made up of bands within the multispectral spectral ranges. The different options include true colour, false colour urban, false colour infrared, and all-optical bands.
Indices are calculated using the multispectral bands. These calculations result in the outputs being in the form of an index with values between 0-1. At the same time, the indices provide additional information about the ground surface being imaged.