The primary purpose of a value stream is to illustrate all the steps required to create and deliver value to a customer. Aligning service deployment with value streams ensures that deployment activities are directly focused on facilitating this flow of value. The ultimate goal is to meet or exceed customer expectations, thereby enhancing their satisfaction. While speed and cost efficiency are benefits, they are means to the primary end of delivering value and satisfying the customer.

A. Improving resource utilization is a potential outcome of value stream optimization, but it is not the primary purpose, which is focused on value delivery.

C. Reducing operational costs is a secondary benefit. The main focus is on value co-creation, which may or may not result in lower costs.

D. Speeding up service delivery is a key enabler within a value stream (improving flow), but the ultimate goal is customer satisfaction through value.

1. AXELOS. (2019). ITIL® 4 Foundation. TSO (The Stationery Office). Section 4.5, "The ITIL service value chain," defines the value stream as a series of steps to create and deliver products and services to consumers, ultimately for value co-creation.

2. AXELOS. (2020). ITIL® 4: Create, Deliver and Support. TSO (The Stationery Office). Section 2.3, "Using value streams to create, deliver, and support services," explains that value streams are designed to ensure the organization holistically delivers value to its customers.

3. Martin, K., & Osterling, M. (2014). Value Stream Mapping: How to Visualize Work and Align Leadership for Organizational Transformation. McGraw-Hill. Chapter 2, "Value Streams," establishes that the entire concept is oriented around the customer's perspective of value.