Case I — Kenya: Financial services without conventional banking infrastructure
Before the expansion of mobile money, access to formal financial services in Kenya was limited.
Traditional financial inclusion often depended on access to bank branches, formal accounts, and supporting financial infrastructure.
M-Pesa followed a different operational model.
Launched in 2007 by Safaricom, it enabled customers to deposit, store, transfer, and withdraw money through mobile phones and a network of physical agents.
The service did not require every user to own a smartphone or maintain a conventional bank account.
This design mattered because it connected digital transactions to an existing cash economy.
The agent network also addressed a practical problem that software alone could not solve: converting money between physical cash and electronic balances.
A 2016 study by Tavneet Suri and William Jack, published in Science, estimated that expanded access to M-Pesa lifted approximately 194,000 Kenyan households, representing about 2% of households, out of poverty.
The study associated the effects with improved financial resilience, saving behavior, and occupational changes, particularly among women.
Additional research published in The World Bank Economic Review found positive effects of mobile money access on local economic activity, with stronger effects in areas that were initially wealthier, more urban, and better connected.
This qualification is important.
Even a successful technology can generate unequal benefits when existing infrastructure and economic conditions differ.
Kenya's experience suggests that an innovation can overcome some institutional barriers while remaining dependent on other supporting conditions.
Case II — Nigeria: Electricity access beyond conventional grid expansion
Nigeria's electricity problems cannot be understood through generation capacity alone.
The country faces challenges involving transmission, distribution, financing, reliability, and access to electricity in underserved communities.
Extending the national electricity grid is one approach, but it is not necessarily the most immediate or cost-effective solution for every settlement.
The Nigeria Electrification Project supported decentralized approaches, including solar mini-grids and solar home systems.
According to World Bank project reporting, by April 2025 the project had supported 180 installed mini-grids across 23 states, enabling approximately 19.2 megawatts of renewable energy capacity through its mini-grid component.
A December 2024 implementation report also documented more than 5.9 million underserved and unserved Nigerians provided with electricity services through the broader project, including solar home systems and other components.
These figures establish substantial deployment.
However, installed capacity and reported access do not by themselves establish the quality or durability of service.
The more important question is whether users receive electricity that is sufficiently reliable, affordable, and useful for household or productive activities.
This case suggests that decentralized infrastructure can address constraints that conventional systems have struggled to overcome.
It does not establish that mini-grids are universally superior to grid expansion or that their deployment automatically produces economic development.
Case III — Rwanda: Medical logistics designed around geography and urgency
Access to medical supplies depends partly on whether supplies can reach the right facility when they are needed.
Blood products create particular logistical challenges because they have limited shelf lives, uncertain demand, and strict handling requirements.
For remote health facilities, difficult road journeys can increase delivery times and complicate inventory management.
Rwanda introduced drone-based delivery to address part of this problem.
A 2022 study published in The Lancet Global Health examined blood-product deliveries involving 20 facilities and data covering 2015–2019.
Between March 2017 and December 2019, the drone service delivered 12,733 blood-product orders, including 5,517 emergency orders.
The researchers reported a mean drone delivery time of 49.6 minutes.
This was 79 minutes faster than estimated conventional road delivery using one comparison method and 98 minutes faster using Google Maps driving-time estimates.
The study also reported a reduction in blood-product expiration, equivalent to 67% at twelve months after implementation in its interrupted time-series analysis.
The important distinction is not that drones are inherently superior to vehicles.
It is that the delivery architecture addressed specific geographical, timing, and inventory constraints.
The study did not determine whether the intervention was cost-effective across all settings, nor did it directly establish improvements in patient survival.
Supplementary Evidence — Kenya's Digital Literacy Programme
Education technology provides a useful counterpoint.
Kenya invested in digital learning infrastructure, including learner devices, teacher devices, projectors, connectivity equipment, and electricity provision.
However, a 2023 national education reform report documented continuing challenges involving teacher and learner digital literacy, poor internet connectivity in some regions, and the costs of accessing digital content.
This illustrates a central limitation of technology-led intervention.
Providing devices and connectivity can be necessary without being sufficient.
Successful learning also depends on teacher preparation, educational content, maintenance, classroom integration, and the broader learning environment.
The report documents implementation constraints; it does not establish that Kenya's entire digital learning programme failed.
Comparative Interpretation
Across these cases, useful technology was not simply technology that performed well under ideal conditions.
It was technology supported by an operating model capable of responding to actual constraints.
M-Pesa connected digital finance to cash-based transactions and retail agents.
Nigeria's decentralized energy projects addressed communities where conventional electricity access was inadequate.
Rwanda's medical logistics system reduced delivery delays through an alternative transport arrangement.
Kenya's educational technology experience illustrates the difficulty of translating equipment provision into effective institutional use.
Taken together, these cases support investigating contextual fit as one important determinant of development outcomes, while leaving open the relative importance of funding, technical performance, institutional quality, and other explanations.