+------------------------
Introduction
+------------------------
+
+The OPNFV project provides different kinds of output to its users:
+
+1. **Target Software Platform**
+
+ This provides the software which will run as NFVI and VIM in an actual NFV deployment
+ It is an integrated solution of several other open source projects, e.g. OpenStack,
+ Linux, ODL.
+
+2. **Deployment Tools**
+
+ So called installers help the user deploy target software on his hardware.
+ OPNFV provides multiple options to do this.
+
+3. **Test Cases and Framework**
+
+ The target software platform can be verified and evaluated using these testcases.
+ Their goal is to show that the deployed platform is usable to run VNFs.
+
+4. **Documentation**
+
+ OPNFV provides the necessary documents describing target software platform, deployment
+ tools, tests, etc. in their architecture and usage.
+
+5. **Requirements**
+
+ OPNFV community works on requirements of open source projects used in OPNFV to
+ make these projects better suitable for NFV telco carrier use cases.
+ These requirements are described in requirement documents and also forwarded
+ to the "upstream" projects in the format required by these projects.
+
+6. **Community Labs**
+
+ OPNFV creates lab environments not only for development of OPNFV, but also to help
+ build the NFV ecosystem. OPNFV labs follow a defined structure and configuration.
+ Some of the labs have their dedicated tasks in the development environment, some of
+ the labs will be provided for open use.
+
+**OPNFV Releases**
+
+OPNFV bundles the target software, installers, documentation, test cases and lab
+description to releases and provides documentation describing the scope and features
+provided.
+
+This overview document introduces these components on a high level and points you to more
+detailed documentation.
+It describes the OPNFV Brahmaputra release.
+
+OPNFV Requirement documents typically describe requirements that will be implemented in
+later releases of OPNFV. Thus they are not part of a release package.
+
+Also community labs are independent of releases. Only the lab description is included in
+the release and describes the requirements of a lab to successfully run Brahmaputra
+deployments.
+
+
+------------------------
+Target software platform
+------------------------
+
+Software architecture
+=====================
+
+This section will provide information which upstream projects, versions and components are
+integrated in the Brahmaputra release
+
+OpenStack
+---------
+
+OPNFV uses OpenStack as cloud management system.
+Brahmaputra is based on OpenStack Liberty Release. It comprises the following sub-projects
+and modules:
+
+* Nova
+* Neutron
+* Cinder
+* Ceilometer
+* etc.
+
+Operating System
+----------------
+
+OPNFV uses Linux on all target machines. Depending on the installers, different
+distributions are supported.
+
+Editors note:
+Add a table showing which installer supports which operating system for controller nodes and for compute nodes.
+
+
+SDN Controllers
---------------
-The OPNFV Platform Overview needs work...
+OPNFV Brahmaputra release supports three different SDN controllers:
+
+* OpenDaylight
+* ONOS
+* OpenContrail
+
+Depending on the SDN controller you are using, the featureset will vary.
+
+OpenDaylight
+++++++++++++
+
+Editor's note:
+We need a high level paragraph here and a description of how we use ODL.
+
+ONOS
+++++
+
+Editors note:
+We need a high level paragraph here and a description of how we use ONOS, especially the
+relation of ONOS and ONOSFW project's integration and features.
+
+OpenContrail
+++++++++++++
+
+Editors note:
+We need a high level paragraph here and a description of how we use OpenContrail, including
+its vRouter capabilities.
+
+Data Plane
+----------
+
+Other Components
+----------------
+
+Deployment Architecture
+=======================
+
+Editors note:
+Short description that we use a typical configuration with 3 controller nodes running
+OpenStack, SDN, etc. and a minimum of 2 compute nodes for deployment of the VNFs.
+Also mention that we use a "jumphost" for the initial bring-up, and the deployment of the
+test framework.
+
+In a second level of detail, describe how software is distributed over the 3 controller
+nodes, compute nodes and other hardware.
+
+Dynamic View
+============
+
+Editors note: we might skip this section completely for Brahmaputra.
+
+Or we provide rather short statements. In later versions, we have to describe which
+software is involved in which way during:
+
+* VNF Life Cycle (onboarding, instantiate, scaling): we can reference to other documents
+* Hardware Life Cycle (mainly how to add compute nodes, but also other cases)
+* ...
+
+----------------
+Deployment Tools
+----------------
+
+Brahmaputra provides 4 different installers
+
+Editors note:
+A table to summarize main characteristics would be nice
+
+We also need to list restrictions or dependencies like which installer can install which SDN......
+
+-----------------------
+Testcases and Framework
+-----------------------
+
+Editors note:
+Just a high level description about the different types of tests and the role of yardstick as central framework.
+
+
+
+