Single Window Systems
In the OIC Member States
103
Why does it matter?
Changes or integration of new functionalities with a hard coded approach is very costly and
complex. Changing hundreds of thousands lines of code with a many dependencies and linked
functionalities is an expensive and complex process that requires upmost effort, even for the
most skilled programmers.
2. Lack of Interoperability at the Data and Business Process Level
The IT architecture needs to have the ability to connect, integrate and support diverse and
legacy IT systems and applications. SWs therefore have to embed system-to-system connectivity
or services. This allows SWs to provide collaborative, networked and interconnected workflows
and business processes.
Interconnectivity has the following three dimensions:
 process level whereby standardised and procedures build the foundation for a common
process and data model.
 message interoperability whereby data is exchanged in a process based on the same
semantic structures and definitions.
 technical interoperability, which translates into infrastructure requirements to support the
technical exchange of information.
Why does it matter?
The lack of interoperability is a major obstacle in view of compromising SW’s ability to provide
services, data and information to the users in a timely and accurate manner.
3. Ensure Data Protection
Security of the overall system and protection of stored data and data in transit is a crucial
requirement for SW. Data needs to be protected from unauthorized use with encryption
techniques used for all traffic from point-to-point. SWs must develop and maintain sophisticated
user authorizations system for both end-users and service providers.
Why does it matter?
Security is closely linked to the need for trust and is growing in importance sue to increase
public awareness. It is even more crucial when there is a direct linkage to the financial activities,
i.e. payment activities.
Policy Options
1. Re-use of Services
The re-use of services is the linking of individual services to one or more new or pre-existing
services. A service generally contains most or all of the presentation and process logic, and it
may also have same or similar data set. The majority of business processes in a SW application
and server layer are provided by services that were previously deployed and could therefore be