Transaction Design, Inc. (TDI) is a consulting firm specializing in security for VOS and capacity and performance studies. Formed in 1990, Transaction Design assists Fortune 500 and other clients by providing information for managing their OLTP Payments environment for trouble-free, uninterrupted processing. Our flagship service, Ban Bottlenecks®, is a fixed-price, low cost, ongoing capacity/performance audit of a client's servers. It provides precise insight into specific going-forward failure points and a roadmap of what should be corrected. Up front, before the failure occurs. It supports NonStop, VOS, Windows, Unix/Linux. Our security offering, LTS/OnGuard, is the premier security offering for the Stratus VOS architecture. It is marketed worldwide by Stratus Technologies. We offer a comprehensive services package to assist clients in implementing their corporate security standard on VOS and OpenVOS systems. Transaction Design is based in the San Francisco Bay Area (California USA), with clients worldwide.