Final answer:
The ideal Lean-Agile approach for implementing an epic spanning two Program Increments is to implement them sequentially, which allows for focus, adaptability, and the integration of feedback, aligning with Agile principles.
Step-by-step explanation:
From a Lean-Agile perspective, the optimum implementation path for an epic spanning two Program Increments (PIs) is to implement the PIs sequentially. This approach aligns with Agile principles that emphasize incremental delivery, adaptability, and continuous feedback. Implementing one PI at a time allows the team to focus on delivering a smaller set of features, test their efficacy, incorporate feedback, and potentially adjust the scope or direction for the subsequent PI based on the lessons learned and stakeholder feedback from the earlier increment.
Moreover, doing so can help in effectively managing the work in progress, which is an essential aspect of Lean thinking. It could mitigate the risks associated with potential overhead, complexity, and the dilution of focus that could occur if both PIs were implemented concurrently. Consequently, option d) Implement the PIs sequentially is typically recommended for a Lean-Agile environment.