Siemens has introduced a new technology Tessent™ Streaming Scan Network (SSN) for delivering scan data to IP blocks. Streaming Scan Network also known as SSN is an EDA IP that includes methodology for generating ATPG and diagnosis. Once integrated in devices, SSN will reduce scan test data volume and allow efficient testing of multiple cores in parallel. It enables the designer to lower risk and development, in regards to ATPG scan testing. SSN is a bus distribution network along with local IP block that generates DFT signals that streamlines data distribution in the design. SSN support two basic modes – “tester-compare” and “on-chip compare”. Within each of these modes there are options to support “throttling” and “rotation” of scan data to fully maximize the bandwidth of the scan data bus and minimize pattern execution time. Each of these use cases have potential new requirements in the ATE. This presentation gives the user a starting point to understanding SSN and key differences in use cases.