The Avaya CRMGateway snap-in is required in Avaya Oceana® to facilitate the customer use-case functionality, where the customer records are too large for importing to the Omnistore database. With Avaya CRMGateway, you can continue to manage the customer details primarily in the external CRM. You can then create the necessary linkage in the Omnistore database to enable the retrieval of customer history and customer journey data that is stored within Avaya Oceana® for the customer.