A sponsor is a business analysis stakeholder who authorizes, funds, and supports the business analysis activities and resources in order to achieve the desired business outcomes. A sponsor is typically a senior executive or manager who has the authority and influence to approve and prioritize the project scope, budget, and schedule. A sponsor also provides strategic direction, resolves issues, and champions the project within the organization. A business analyst works closely with the sponsor to understand their needs, expectations, and goals, and to communicate the project status, risks, and benefits.
References: The role and responsibilities of a sponsor are described in the BABOK Guide, version 3, under the section 2.2 Stakeholders1. The CCBA Certification Study Guide, version 3, also covers this topic under the chapter 5 Elicitation and Collaboration2. Additionally, the Business Analysis for Practitioners: A Practice Guide provides a detailed explanation of how to engage and manage sponsors throughout the project life cycle