AvaTax for Communications offers two ways to geocode address and latitude/longitude coordinates:
The Jurisdiction Determination endpoint returns a list of geocoded results based on one or more address or latitude/longitude coordinate pairs submitted through the API.
Use Geo REST when:
Geo Batch accepts an input address or latitude/longitude file and returns a link to an output file containing the geocoded results.
When to use Geo Batch:
A UI-based version of Geo Batch is available for use as well via the Communications Customer Portal. This UI-based Geo Batch is useful when you have one or two CSV files to submit at a time and no need to automate the process, such as during testing.