Mainframe Devops

Understanding Devops on System z

Listen as several IBM product experts discuss how devops impacts business.

IBM DevOps solutions offer an integrated, unified and comprehensive set of capabilities that is essential to the modernization of mainframe development & delivery practices. It accelerates the pace of innovation for enterprise organizations while ensuring the stability of core business systems

These Eight DevOps Practices Are the Key To Success

1. Minimum Viable Product

Identify the requirements that are the absolute minimum to allow the product, feature, or subsystem to function for the major stakeholder needs. Focus on delivering only those requirements in early iterations, and non-critical features in subsequent iterations.

2. Dedicated Teams

Ensure developers, architects, stakeholders and managers are dedicated to delivery of the product. Enable them to do their job or task without interruption, and trust their judgement to do what’s right. 

3. Loosely Coupled Architectures

Frequent smaller delivery helps to keep the stakeholder engaged and the development team informed of changes in the business climate. The efficiency of working in small batches is one reason why adopting agile development has benefited the software industry.

4. Minimize Hand-offs; Maximize Flow

A handoff occurs when one team member hands off a piece of work to another (for example, a developer fixes a defect and hands it off to the tester to verify the fix). Flow is the process by which a team member can complete a task, and that the system can move through the development cycle from ideation to production. 

5. Deliver in Small Batches

The idea that working in small batches is a far more efficient than working in large batches is nothing new. The efficiency of working in small batches is one reason why adopting agile development has benefited the software industry. In the days of waterfall development, months of coding were followed by months of testing, and only near the end of the testing phase did anything really work.

6. Transparency

Good communication improves the collaboration level between teams. High levels of transparency significantly reduces the costs and waste through the app delivery. The risk of using many different tools will be the problems integrating them. Solving those problems create noise and need to be one of the most important features of a DevOps toolchain orchestration solution.

7. Eliminate Overhead

Find process steps that add little to no value to the business and remove them. Look at complex approval cycles, and manual steps. Enable team members to make non-critical decisions. Identify communications barriers, and zealously remove them.

8. Automate Testing using API's

Automated testing can quickly identify regression errors quickly. Tests should be automated at the unit, API, and user interface layers, and run before every deployment. Manual deployment steps are error prone, and time consuming. Automated deployments are repeatable, predictable, and auditable (and reduce the team’s anxiety at deployment time). 

Want to know more about how these concepts can improve the productivity of your development team? Discuss your options with one of our z/OS DevOps consultants. You’ll talk with someone with deep, hands-on expertise in the field – not just some sales suit who only knows the buzz words. Get a no B.S. evaluation. We promise not to use the phrase “digital transformation”. 

Defeat Inertia With Modern Tooling

Developing and Debugging

Still using 3270 ISPF sessions to edit source members? Modern integrated development environments (IDE’s) are desktop based, have rich editors, can scroll endlessly, and have advanced debugging, code coverage and unit testing abilities. 

Source Code Management

Legacy SCM’s cannot compare to modern systems such as Git, or Team Concert. Rich streaming, and private branching make atomic changes much easier to make, debug, and test. 

Deployment Automation

Need to schedule deployment of a CICS/DB2 application at the same time as a WebSphere app? No problem. Modern tools can do this, and can schedule deployment for off-hours convenience using fully automated, traceable, auditable processes.

Test Automation

Tired of having to retest an entire system because of one line of code change? Automation can make that a breeze. Whether it is using zUnit testing, automated functional testing, or virtualizing subsystems such as CICS or DB2 to isolate testing to only affected load modules, automation of tests can vastly improve your time to market as well as reduce time for regression testing. 


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