CrowdStrike's blog post discusses their modular testing approach designed to improve efficiency and scalability in cybersecurity product testing. This methodology adopts a Lego-like model where independent test components can be combined to create complex test scenarios, enhancing flexibility and reusability. By separating data and functionality, developers are able to construct tests that are adaptable and can be processed in parallel, aiding in distributed architectures. The approach contrasts with the classical testing model by reducing complexity in orchestrating tests, thus allowing for the development of more intricate tests by reusing and building on existing elements. This flow-based testing is particularly effective for end-to-end tests of complex distributed systems, although it may not be ideal for testing single services due to its initial complexity.