Browse Definitions :
Definition

SAA (Systems Application Architecture)

Contributor(s): Olivier Theizen

Systems Application Architecture (SAA) was IBM's strategy for enterprise computing in the late 1980s and early 1990s. It was replaced and considerably expanded by IBM's Open Blueprint , an enterprise strategy for network computing. Both of these are structured views of the types of computing services that an enterprise may need, the relationships between these services, and specification of the standards and products that are envisioned as providing these services.

SAA defined three layers of service:

  • Common User Access
  • Common Programming Interface
  • Common Communications Support

By using or creating applications and data that conformed to these three layers (provided by strategic IBM products), an enterprise could be assured of consistency and some amount of program portability among IBM's range of computer systems. As IBM, along with the rest of the computer industry, discovered the value of industry-wide standardization and open computing, the company revised its strategy. Its new strategy, the Open Blueprint, would recognize that customers wanted consistency and portability of programs and data across different manufacturers' systems, not just within IBM's systems. Two other trends not current when SAA was developed have influenced IBM's Open Blueprint: the client/server model of distributing computing and the concept and implementation of object-oriented programming . The Open Blueprint seems well positioned to absorb another new trend: network computing, including use of the Internet.

Since most of IBM's large customers have a large investment in legacy application s and data developed during the era of SAA and prior, IBM's Open Blueprint recognizes the need to support them. Notably, IBM's Systems Network Architecture ( SNA ), the keystone of the SAA Common Communications Support, is retained in the Open Blueprint as an alternative to TCP/IP . Other companies have also made investments in SAA, recognizing that IBM customers' legacy applications will not be going away soon and that in some cases these applications may represent the current best solution. Novell's Netware for SAA is an example of a widely-installed product that retains the SAA identity.

This was last updated in March 2011

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • GPS jamming

    GPS jamming is the process of using a frequency transmitting device to block or interfere with radio communications.

  • time-based one-time password (TOTP)

    A time-based one-time password (TOTP) is a temporary code, generated by an algorithm, for use in authenticating access to ...

  • Security Operations Center (SOC)

    A security operations center (SOC) is a command center facility for a team of IT professionals with expertise in information ...

SearchHealthIT

SearchDisasterRecovery

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

SearchStorage

  • network-attached storage (NAS)

    Network-attached storage (NAS) is dedicated file storage that enables multiple users and heterogeneous client devices to retrieve...

  • SSD (solid-state drive)

    An SSD (solid-state drive) is a type of nonvolatile storage media that stores persistent data on solid-state flash memory.

  • NAND flash memory

    NAND flash memory is a type of nonvolatile storage technology that does not require power to retain data.

Close