The area of the Success Plan that the Renewal Manager is responsible for is Solution Renewal. The Success Plan is a document that captures the account team's strategy and actions to achieve customer success. It defines the customer's desired outcomes, identifies the potential barriers and risks, outlines the key milestones and deliverables, and assigns roles and responsibilities to the account team members. The Solution Renewal area of the Success Plan covers the activities related to renewing the customer's contract, such as reviewing the current solution, assessing the customer's satisfaction and value realization, proposing any improvements or enhancements, negotiating the terms and conditions, and executing the renewal agreement. The Renewal Manager is in charge of leading and managing the Solution Renewal area of the Success Plan, as well as collaborating with other account team members, such as Customer Success Managers, Account Executives, or Sales Engineers.