  Cloud computing provides great benefits for applications hosted on the Web
that also have special computational and storage requirements. This paper
proposes an extensible and flexible architecture for integrating Wireless
Sensor Networks with the Cloud. We have used REST based Web services as an
interoperable application layer that can be directly integrated into other
application domains for remote monitoring such as e-health care services, smart
homes, or even vehicular area networks (VAN). For proof of concept, we have
implemented a REST based Web services on an IP based low power WSN test bed,
which enables data access from anywhere. The alert feature has also been
implemented to notify users via email or tweets for monitoring data when they
exceed values and events of interest.
