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.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • audit program (audit plan)

    An audit program, also called an audit plan, is an action plan that documents what procedures an auditor will follow to validate ...

SearchSecurity

  • computer worm

    A computer worm is a type of malicious software program whose primary function is to infect other computers while remaining ...

  • black hat

    Black hat refers to a hacker who breaks into a computer system or network with malicious intent.

  • copyright

    Copyright is a legal term describing ownership of control of the rights to the use and distribution of certain works of creative ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

  • mass notification system (MNS)

    A mass notification system is a platform that sends one-way messages to inform employees and the public of an emergency.

SearchStorage

  • non-volatile memory (NVM)

    Non-volatile memory (NVMe) is a semiconductor technology that does not require a continuous power supply to retain the data or ...

  • hybrid hard drive (HHD)

    A hybrid hard drive (HHD), sometimes known as a solid-state hybrid drive (SSHD), is a mass storage device that combines a ...

  • USB flash drive

    A USB flash drive -- also known as a stick, thumb or pen drive -- is a plug-and-play portable storage device that uses flash ...

SearchSolidStateStorage

  • RRAM or ReRAM (resistive RAM)

    RRAM or ReRAM (resistive random access memory) is a form of nonvolatile storage that operates by changing the resistance of a ...

  • JEDEC

    JEDEC is a global industry group that develops open standards for microelectronics.

  • M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification written for internally mounted storage...

SearchCloudStorage

  • Google Cloud Storage

    Google Cloud Storage is an enterprise public cloud storage platform that can house large unstructured data sets.

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

Close