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@@ -6,6 +6,27 @@
 Welcome to the SEMS Project Documentation
 ==============================================
 
+Sipwise SEMS is a drop-in replacement for B2B (SIP/media) components.
+
+Sipwise SEMS is originally a fork of a well known SEMS open source project
+but over the course of time we went far away from it realizing our own ideas and making SEMS project alive and active.
+Our project is fully GPL license compatible implementation.
+
+Sipwise SEMS primarily is a B2B service, which is mainly considered to be used in VoIP setups based on SIP protocol signaling.
+And still it is quite agnostic in terms of which other software is to be used in combination with it (Kamailio, OpenSIPS etc.).
+
+It is capable of media processing, e.g.: RTP relay and media generation (based on SEMS provided applications).
+
+It’s mostly meant to be used with Kamailio- or OpenSIPS- SIP proxy servers, but also any other SIP Proxy services supporting RFC3261 and RFC8866 standards.
+
+Sipwise SEMS is designed to work based on the event processing model, which makes it efficient in combination with threading.
+It is opposite in this regard to many other open-source projects known to the SIP world,
+which are traditionally dependent on process fork based implementation (coming traditionally from the years past) and also are mostly process oriented.
+
+For more information see "Overview" chapter of this guide.
+
+==============================================
+
 .. toctree::
    :maxdepth: 4