IT1204 - Software Engineering -L8
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The document discusses key aspects of software deployment, emphasizing challenges such as business process adaptation, training, system integration, and installation logistics, which contribute to over 50% of software remaining unused. It outlines best practices for successful deployment, including the use of deployment checklists, appropriate tools, continuous integration (CI) servers, and continuous delivery (CD) approaches. The importance of version control and automated testing in the CI/CD process is also highlighted to facilitate efficient and reliable software updates.
IT1204 - Software Engineering -L8
- 1. Software Engineering L8 Sameera Gunathilaka Lead Software Engineer ERP Technical Consultant IT1204 – Software Engineering Institute of Technology, University of Moratuwa 1
- 2. Thought of the day Happiness is a state of mind IT1204 – Software Engineering Institute of Technology, University of Moratuwa 2
- 3. SDLC – Waterfall Model IT1204 – Software Engineering Institute of Technology, University of Moratuwa 3
- 4. Software Deployment Getting software out of the hands of the developers into the hands of the users. 4
- 5. Some stats: More than 50% of software is not used, mostly because it fails at deployment stage. 80% of the cost of software comes at and after deployment. What are the issues that make it hard? IT1204 – Software Engineering Institute of Technology, University of Moratuwa 5
- 6. Key issues around DEPLOYMENT Business processes Most large software systems require the customer to change the way they work. Has this been properly thought through? 6
- 7. Key issues around DEPLOYMENT Training No point in deploying software if the customers can't use it. 7
- 8. Key issues around DEPLOYMENT Integrationwith other systems of the customer. 8
- 9. Key issues around DEPLOYMENT Deploymentitself. How physically to get the software installed. EquipmentIs the customer's hardware up to the job? 9
- 10. Stages of Software Deployment Deployment Testing Monitoring IT1204 – Software Engineering Institute of Technology, University of Moratuwa 10
- 11. Deployment Best Practices 1. Use a deployment checklist Deploying new software can be a complicated task, but it’s simple once you have a process. Nothing prepares a team for success like a checklist. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 11
- 12. Deployment Best Practices 2. Choose the right deployment tools You want tools that work natively with application infrastructure and integrate with your other tools. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 12
- 13. Deployment Best Practices 3. Use a continuous integration (CI)server One of the most important tools for successful agile deployment is a continuous integration (CI) server. CI servers pull in the source code from all developers and test it together in real time. This helps teams avoid “integration hell”, where code works on a developer’s workstation, but not together in the main branch IT1204 – Software Engineering Institute of Technology, University of Moratuwa 13
- 14. Deployment Best Practices 4. Adopt continuous delivery(CD) CD involves packaging and preparing the code for deployment. The application is put in a pre-production environment, or a replica of the actual production server. The goal of continuous delivery is to have applications that are always ready to deploy. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 14
- 15. Deployment of Software Releases •Release – One or more changes to an IT service that are build tested and integrated together. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 15
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- 21. Source Code Repository(Version Control) Software tools that help a software team manage changes to source code over time. Version control software keeps track of every modification to the code in a special kind of database. If a mistake is made, developers can turn back the clock and compare earlier versions of the code to help fix the mistake while minimizing disruption to all team members. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 21
- 22. Continues Intergradation(CI) • Continuous integration (CI) is the practice of automating the integration of code changes from multiple developers into a single software project • The CI process is comprised of automatic tools that assert the new code’s correctness before integration • As a result, development teams can detect problems early. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 22
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- 24. Continues Delivery(CD) Continuous delivery is an approach of producing software in such a manner that the software can be readily/continuously released whenever required. The entire activity is performed in a sequence of small repetitive cycles IT1204 – Software Engineering Institute of Technology, University of Moratuwa 24
- 25. CI/CD - Continues Integration and Continues Delivery • CI/CD is a way of developing software in which you’re able to release updates at any time in a sustainable way. • Developers to merge their changes to the main code branch many times per day. • Each code merge to trigger an automated code build and test sequence. Developers ideally receive results in less than 10 minutes, so that they can stay focused on their work. IT1204 – Software Engineering Institute of Technology, University of Moratuwa 25
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- 28. Thank you IT1204 – Software Engineering Institute of Technology, University of Moratuwa 28