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This dissertation explores issues of resilience in pervasive Internet of Things (IoT) deployments. It discusses facilitating the classic observe-analyze-adapt loop by addressing problems with devices, networks, and applications. We discuss our experiences with two projects: the Safe Community Awareness and Alerting Network, which leverages pervasive devices to extend a smarter safer home to residents, and the Community Seismic Network, which creates a massive network of low-cost sensors for detecting earthquakes. We propose a middleware framework for improving resilient communications between devices and services, facilitating a scalable resilient multiprotocol data exchange, and supporting more resilient distributed applications.