Incremental Software Architecture: A Method for Saving Failing IT Implementations by Michael Bell

Author:Michael Bell [Bell, Michael]
Language: eng
Format: azw3, epub
ISBN: 9781119213697
Publisher: Wiley
Published: 2016-01-18T16:00:00+00:00

Authentication Server Manages Access

The next step in our technical profiling process is to understand what the authentication server's features are and how they contribute to the deployed environment in organization 2, depicted in Figure 9.1.

The authentication server is utterly central to organization 2's production environment, an integral design component that manages access to enterprise assets. The server authenticates user and process credentials to grant a variety of access privileges to production facilities, systems, and related applications. Authorized parties are then allowed to access deployed services in certain capacities and permission levels. Moreover, repudiating services from consumers triggers monitoring alerts that are addressed urgently to protect organizational assets.

After looking deeper into the end-state architecture illustration in Figure 9.1, it is apparent that applications 4, 5, and 6 are linked to the authentication server in organization 2. The ESB and the data aggregator are linked to it too. Even the identity server in organization 1 exchanges messages with the authentication server. This formation creates a tight dependency between the message exchange parties. In this scheme, the authentication server along with its direct consumers resembles a star formation, a centralized design style. This arrangement on the network implies that the server offers vital services that almost every architecture element must use.

Remember the chief contribution of the authentication server to the end-state architecture:

Access control management

User and process authentication

User and process authorization

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