Create a Microsoft Advertising Responsive Search Ad and run an A/B experiment via the Campaign Management API

Steps

1. Authenticate with OAuth 2.0 using the Microsoft Advertising authorization endpoint and call the GetCustomersByCurrentUser operation to confirm the correct account context
2. Call AddAds with ad type ResponsiveSearchAd, providing an array of up to 15 headlines and 4 descriptions; set at least 3 headlines and 2 descriptions as REQUIRED pin positions
3. Call AddExperiments to create a campaign experiment, specifying the base campaign ID, experiment name, traffic split percentage (e.g. 50% base / 50% treatment), and start and end dates
4. Modify the experiment campaign created by AddExperiments — such as changing bids or adding/removing ad variations — to define the treatment condition being tested
5. After the experiment runs for the desired period, call GetExperiments to retrieve experiment status and then pull performance data by campaign ID for both the base and experiment campaign via ReportingService
6. Call PromoteExperiment to graduate the winning variant's settings back to the base campaign, or let the experiment expire and apply changes manually