The maturity levels of the SAP Integration Solution Advisory Methodology are as follows:

Assess your integration strategy. This level helps you evaluate your current integration landscape and identify the gaps and challenges that need to be addressed.

Design your hybrid integration platform. This level helps you define your target integration architecture and select the best-fit integration technologies and tools for your scenarios.

Implement your integration architectural strategy. This level helps you execute your integration projects and deliver value to your business.

Enable your integration structure. This level helps you establish a governance model and best practices for your integration operations and maintenance. References: Integration Software | SAP Integration Suite, Modernize Integration with SAP Integration Suite | openSAP