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API GW closely works with three components in ONAP – Ext-API , MSB and DMaaP. API GW can provide a proxy interface to Ext-API project and enable secure connection, Federation, Policy enforcement, load balancing, and overall API Management capability. API GW can enhance the capability of MSB with built-in plugins that enhance MSB to have capabilities such as API LCM, Marketplace, API Catalog management, Analytics, RBAC, Security Management, API Aggregation and Composition, Script insertion, Expression language support, etc. API-GW can act like a DMaaP client and expose notifications to external applications through a subscribed hub resource.
Currently, there is no proposal This proposal does not intend to replace any of the existing components/functionality in ONAP. Some of the redundant functionality that exists between API GW and ONAP Components such as Ext-API and MSB can be managed through collaboration and mutual agreement. API GW can also potentially be a subproject of either Ext-API or MSB to augment the missing capabilities in respective projects. Another potential option is to merge functionality in Ext-API, MSB, and API-GW to create a single API Management/Adaptation component.
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