Panel: Dependability through Assuredness™ (O-DA), a standard of The Open Group
Moderator: David Lounsbury, VP & CTO, The Open Group
Panelists: Dr. Mario Tokoro, Sony CSL; Jack Fujieda, ReGis; TJ Verdi, Boeing; Bill Brierley, Conexiam; Nickolas Guertin, Governing Board Member
Dependency of our daily life on software systems is growing for the purpose of convenience, efficiency, and security. Most computer systems are used for long periods of time and are being constantly improved in service objectives and users’ requirements under evolving technologies and changing regulations/standards. These systems have become extremely complex. Dependability of these software systems cannot be achieved solely by using conventional technologies, such as software processes and/or Formal Methods. These systems require something more.
To achieve Dependability in such large and complex systems, this standard introduces the notion of Assuredness. Assuredness is the state for which the Stakeholders of a system have a consensus that confirms that a satisfactory degree of Evidence is provided to ensure that an implementation of an architecture has met the requirements specified to be Assured. Each Stakeholder can then be accountable to that consensus.
Such Assuredness does not necessarily ensure full Dependability of a system, but it may yield insights to improvements to the Dependability of a system. An Architect may use tools such as the DEOS (Dependability Engineering of Open Systems) Framework which adds in a runtime environment to capture information necessary to post-analyze system failures to help make the Architecture more Dependable in the future.
This standard should be used by an Architect wishing to develop an Assured and/or Dependable Architecture. Assured Architectures have the additional artifacts, processes, tools, evidence, and documentation to enable the stakeholders of an architecture to be confident that their architecture’s implementation complies with their stipulated requirements. The information in this standard can be used stand-alone or with an encompassing Architecture Development Method (ADM), such as the TOGAF® ADM.
David Lounsbury (1st photo) is the Chief Technical Officer (CTO) and Vice President, Services for The Open Group. As CTO he ensures that The Open Group’s people and IT resources are effectively used to implement the organization’s strategy and mission. As VP of Services, David leads the delivery of The Open Group’s proven collaboration processes for collaboration and certification both within the organization and in support of third-party consortia.
David's previous executive assignments at The Open Group and the Open Software Foundation (OSF) include VP Advanced Research and Innovation. In this role, he was in charge of coordinating corporate activity for major programs among the development, membership, and specification/test/branding business activities. He also served as VP of the Collaborative Development Group, which fostered availability and proliferation of open systems technology through collaborative funding and development. Major programs in the group included LDAP, ActiveX Core Technology, DCE 1.2, CDE-Next, and Complex Text Layout PST's, as well as support and consulting activities. Other assignments at OSF included Director of the Distributed Environment Engineering group. This group was responsible for production of the DCE 1.1 and DME 1.1/Network Management Option technologies. David was the manager of OSF's DCE effort from the announcement of the RFT in 1990.
Prior to coming to OSF, David worked for Prime Computer as the manager of the Multiprocessor Operating Systems group, working on systems incorporating CMU Mach and Unix System V release 4 technology. Earlier, he led the Open Systems technology group, which developed a variety of networking products including SNA, TCP/IP, and OSI Ethernet.
David holds a degree in Electrical Engineering from Worcester Polytechnic Institute, and is holder of three U.S. patents.
Dr. Mario Tokoro (2nd photo) is the head of