“Unknown based on available evidence.”
West Technology Group (west.com) operates as a technology and communications services company. The available evidence is largely limited to legal/privacy documentation and a single reference to Bank of the West (a separate banking entity) using Fiserv for Zelle. No meaningful product evolution timeline can be reconstructed from the current evidence.
West is headquartered in United States.
Get a read on where your own stack stands against West and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.