EDB Postgres Extended Server
============================

EDB Postgres Extended Server is a Postgres database server distribution
built on open-source, community PostgreSQL. It’s fully compatible with
PostgreSQL. If you have applications written and tested to work with
PostgreSQL, they will behave the same with EDB Postgres Extended Server.
We will support and fix any functionality or behavior differences
between community PostgreSQL and EDB Postgres Extended Server.

EDB Postgres Extended Server’s primary purpose is to extend PostgreSQL
with a limited number of features that can’t be implemented as
extensions, such as :ref:`enhanced replication optimization <Replication>`  used by :ref:`EDB Postgres Distributed </pgd/latest/>`  and
 :ref:`Transparent data encryption <Transparent data encryption>`  , while maintaining parity in other respects.

Additional value-add enterprise features include:

-  Security though :ref:`Transparent data encryption <Transparent data encryption>` 

-  Optional :ref:`SQL superset <sql_features>`  to community PostgreSQL

-  :ref:`WAL pacing delays to avoid flooding transaction logs <Operations>` 

-  :ref:`Additional tracing and diagnostics options <Additional tracing and diagnostics options>` 

.. toctree::
  :maxdepth: 3

  release_notes--index
  deploy_options
  installing--index
  Features--index
  Reference--index