Which supply chain innovation has most significantly reduced the 'last mile delivery' costs in urban transportation logistics since 2015?

The transportation industry's supply chain has undergone significant transformations in recent years, with technological innovations addressing key logistical challenges. From real-time tracking to automated warehouse systems, companies are implementing various solutions to optimize their operations. Test your knowledge about one of the most impactful supply chain innovations that has specifically revolutionized transportation logistics in the past decade.

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Micro-fulfillment centers strategically placed in urban areas
Blockchain-based tracking systems for vehicle maintenance
Hydrogen fuel cell implementation in long-haul trucking
AI-powered traffic prediction software for highway transport