The document discusses power distribution and thermal management challenges for future chiplet-based architectures. It describes the current power architecture for Intel cores that uses a 1.8V input converted to an unregulated 0.9V supply. Future architectures may use local PMICs/chiplets with higher 3.3V or 5V inputs to reduce pins and separate analog and digital power domains, though conversion losses need to be dissipated. An active interposer could provide these conversion functions but poses technology and heat dissipation challenges. Thermal budgeting and local heating effects will require power/thermal controllers using temperature sensors. Chiplet specifications like voltage, current, thermal resistance, and interfaces will need to be standardized.