1. Kendall, K. E., & Kendall, J. E. (2019). Systems Analysis and Design (10th ed.). Pearson. In Chapter 3, "Project Management," the text describes the systems proposal, stating that the summary and recommendations section is where the analyst must "sell the system and gain the approval of management to proceed." This directly aligns the conclusion with the goal of getting approval.
2. Shelly, G. B., & Rosenblatt, H. J. (2012). Systems Analysis and Design (9th ed.). Cengage Learning. In Chapter 3, "Managing Systems Projects," the report to management (a form of proposal) concludes with a recommendation. The purpose is to elicit a decision from management to "continue the project, perform additional study, or terminate the proposal" (p. 111). This confirms the closing's function is to secure a decision to proceed.
3. Valacich, J. S., & George, J. F. (2020). Modern Systems Analysis and Design (9th ed.). Pearson. Chapter 5, "Project Initiation and Planning," discusses the Baseline Project Plan (BPP), a major deliverable analogous to a system proposal. The document's purpose is to be reviewed by a steering committee, which then decides whether to "commit resources to the next phase of the project." The conclusion of this process is the formal request for this commitment.