2017-06-21 12:55:48 +00:00
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What is a CorDapp?
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==================
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2017-06-05 12:37:23 +00:00
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Corda is a platform. Its functionality is extended by developers through the writing of Corda distributed
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applications (CorDapps). CorDapps are installed at the level of the individual node, rather than on the network
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itself.
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Each CorDapp allows a node to handle new business processes - everything from asset trading (see :ref:`irs-demo`) to
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portfolio valuations (see :ref:`simm-demo`). It does so by defining new flows on the node that, once started by the
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node owner, conduct the process of negotiating a specific ledger update with other nodes on the network. The node's
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owner can then start these flows as required, either through remote procedure calls (RPC) or HTTP requests that
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leverage the RPC interface.
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.. image:: resources/node-diagram.png
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CorDapp developers will usually define not only these flows, but also any states and contracts that these flows use.
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They will also have to define any web APIs that will run on the node's standalone web server, any static web content,
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and any new services that they want their CorDapp to offer.
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CorDapps are made up of definitions for the following components:
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* States
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* Contracts
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* Flows
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* Web APIs and static web content
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* Services
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