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Fluence is an open protocol and a framework for internet or private cloud applications. Fluence provides a peer-to-peer development stack so that you can create applications free of proprietary cloud platforms, centralized APIs, and untrustworthy third-parties. The Fluence stack is open source and is maintained and governed by a community of developers.

At the core of Fluence is the open-source language Aqua that allows for the programming of peer-to-peer scenarios separately from the computations on peers. Applications are turned into hostless workflows over distributed function calls, which enables various levels of decentralization: from handling by a limited set of servers to complete peer-to-peer architecture by connecting user devices directly.

This book, currently in its alpha version, is dedicated to Aqua, with plans to significantly broaden its scope in the future.