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+Introduction
+============
+
+Soledad consists of a client library and server daemon that allows applications
+to securely share a common state among devices. The local application is
+presented with a simple, document-centric searchable database API. Any data
+saved to the database by the application is client-encrypted, backed up in the
+cloud, and synchronized among a user’s devices. Soledad is cross-platform, open
+source, scalable, and features a highly efficient synchronization algorithm.
+
+Key aspects of Soledad include:
+
+* **Client and server:** Soledad includes a :ref:`server daemon
+  <soledad-server>` and a :ref:`client application library <soledad-client>`.
+
+* **Client-side encrypted sync:** Soledad puts very little trust in the server
+  by :ref:`encrypting all data <document-encryption>` before it is
+  :ref:`synchronized <document-sync>` to the server and by limiting ways in
+  which the server can modify the user’s data.
+
+* **Encrypted local storage:** All data cached locally is :ref:`stored in an
+  encrypted database <client-databases>`.
+
+* **Document database:** An application using the Soledad client library is
+  presented with a :ref:`document-centric database API <soledad-client-api>`
+  for storage and sync. Documents may be indexed, searched, and versioned.
+
+* **Encrypted attachments:** storage and synchronization of :ref:`blobs` is
+  supported.
+
+Soledad is an acronym of “Synchronization of Locally Encrypted Documents Among
+Devices” and means “solitude” in Spanish.
+
+See also:
+
+.. toctree::
+   :maxdepth: 1
+
+   intro/data-availability
+   intro/goals
+   intro/related