At Intercom, a company with values that prioritize moving fast but optimizing for the long term, doing less but better, and taking ownership of their engineering projects, the Production Systems team identified an opportunity to reduce their Amazon Web Service (AWS) costs by up to 50% by maximizing the use of Spot Instances. To achieve this goal, they needed a safer and easier way to utilize Spot Instances in their infrastructure. After evaluating two options - forking an open-source project called Autospotting or building their own implementation - the team decided to build their own solution with just the bits they needed. This allowed them to own the design, set their own success criteria, and reduce communication friction while working in isolation from their team. The team's autonomy was essential in making this decision, as it enabled them to choose a project, make better decisions, and work independently without requiring sign-off. With the help of Agile principles, they were able to deliver a functional solution within two weeks, which significantly reduced their EC2 bill over time. Despite the initial success, further refinement is necessary to ensure seamless integration with other cost strategies and systems, such as Reserved Instances and custom Amazon Machine Images (AMI). The ASG-optimizer project serves as a testament to the power of autonomy in engineering, highlighting the importance of alignment with the team, adherence to principles, and continuous improvement.