 SEATTLE--BUSINESS WIRE--Avalara NYSE:AVLR, a leading provider of tax compliance automation software for businesses of all sizes, today announced the launch of its new Avalara Developer portal, which helps developers create new integrations with Avalara and supports Avalara customers with their integrations. The redesigned site offers developers access to an easy-to-use, self-serve portal with the resources and information needed to successfully integrate with Avalara products. New features 