A Decentralized System Services (DSS) architecture defines a framework for building fault-tolerant distributed applications across decentralized and heterogeneous systems. DSS enables “complexity through composition” by defining distributed designs as compositions of limited function and observable services which may be quickly and dynamically assembled to perform higher level functions. DSS defines a standardized interaction between distributed services using sessionless, asynchronous communications with explicit failure semantics. Accounting for latency, failure and state management all become a natural part of the design process. DSS includes a runtime implementation for managing concurrent services—the Common Concurrency Runtime (CCR), a protocol for service interactions—the Web Services Application Protocol (WSAP), and a set of required service behaviors which provide for composibility, location independence, and fault tolerance—Distributed Protocol Oriented Programming (DPOP). DSS also includes a set of base level infrastructure services which make it easy to communicate, secure, distribute, debug, and store content across devices.