What does a "Solution Train" do in SAFe?

In the Scaled Agile Framework (SAFe), a Solution Train plays a critical role in coordinating the work of multiple Agile Release Trains (ARTs) and external suppliers, which is essential for delivering large, complex solutions that cannot be achieved by a single ART alone. The Solution Train facilitates the alignment and integration of various ARTs, allowing them to work in concert towards a common mission. This coordination is vital for maintaining synchronization across teams and ensuring that all aspects of the solution are developed and delivered effectively.

By managing the interactions between these ARTs, the Solution Train is responsible for ensuring that dependencies are identified and addressed, that stakeholders are aligned on the overall vision and objectives, and that the delivery of solutions meets the required quality and performance standards. The focus is on delivering a complete solution that fulfills customer needs rather than on individual project or team-based goals, making it indispensable for scaling agile practices across large enterprises.

This collaborative approach helps mitigate risks associated with large-scale development and ensures that the resulting solution provides maximum value to customers and stakeholders.