Final answer:
Information steward is not a component of the web application layer in Data services architecture as it focuses on data governance and data quality, unlike the other components that handle direct management, design, and execution of data services.
Step-by-step explanation:
The component that is not a component of the web application layer in Data services architecture among the options provided, which are: Data Services management console, Designer, CMC (Central Management Console), Information steward, and job server, is Information steward.
While the other components such as Data Services management console, Designer, CMC, and job server are integral parts of web application layer that handle different aspects of managing, designing, and executing data services; Information steward is more focused on data governance and data quality aspects.
Which although related to data services, does not fall under the typical web application layer components associated with direct data service architecture.