Google's testing team has introduced a new framework for guiding test suite evolution, going beyond the traditional test pyramid. The SMURF mnemonic (Speed, Maintainability, Utilization, Reliability, and Fidelity) highlights key trade-offs when scaling a test suite. According to Google, this framework helps developers prioritize their tests, considering factors like test speed, maintainability, resource utilization, reliability, and fidelity. By recognizing the relationships between these dimensions, teams can optimize their testing strategies for better results.

Source: https://testing.googleblog.com/2024/10/smurf-beyond-test-pyramid.html