You are nearing the deadline for migrating an on-premises data center to Google Cloud and discover a web API running on a server marked for decommissioning. You need to recommend a solution to modernize this API during migration while meeting the following requirements:

• Autoscales during high-traffic periods at month-end
• Written in Python 3.x
• Supports rapid deployment of new versions due to frequent code changes

The solution should minimize cost, effort, and operational overhead. What should you do?