Single-window system Single-window system The single-window system is a trade facilitation idea. As such, the implementation of a single window system enables international (cross-border) traders to submit regulatory documents at a single location and/or single entity. Such documents are typically customs declarations, applications for import/export permits, and other supporting documents such as certificates of origin and trading invoices. The main value proposition for having a single window for a country or economy is to increase the efficiency through time and cost savings for traders in their dealings with government authorities for obtaining the relevant clearance and permit(s) for moving cargoes across national
Single version of the truth message sequencing argue that this concept is not scalable. As the world moves towards systems spread over many processing nodes, the effort involved in negotiating a single agreed-upon sequence becomes prohibitive. But as pointed out by Owen Rubel at his API World talk 'The New API Pattern', the SVOT is always going to be the service layer in a distributed architecture where Input/Output meet; This also is where the actual endpoint binding belongs to allow for modularization and better abstraction of the I/O data across the architecture to avoid the architectural cross cutting concern. Single version of the truth In