It Organizational Unit Teams – DevOps architecture

Requirement gathering and product roadmap team

Improve product experience
Add functional features
Get requirements from IT (internal) and non IT (external) organizational units of the organization
Business Analyst
- Waterfall
- Requirement document
Product Owner
- Agile
- Create feature issues for application engineering team
Product Manager
- Agile
- Roadmap

https://www.atlassian.com/itsm/service-request-management/help-desk-vs-service-desk-vs-itsm (opens in a new tab)
Service request management
Knowledge management
IT asset management
Incident management
Problem management
Change management

Responsibilities:

From CI/CD pipeline perspective, there are 3 types of applications:

Applications which are released to customers so that customers can deploy them to their own environments.
- Examples are Windows, Ubuntu, React, Angular, JDK, Kubernetes, Apache Tomcat, Apache Maven, Selenium, Postman, OWASP Zap, etc.
- Output of the CI/CD pipeline is a release version.
- Released artifacts are executables, archives, installers, container images and virtual machine images for different operating systems and middlewares.
Applications which are deployed to production environment
- Examples are examplebank account, transfer, loan, card, atm, currency, fees microservice application components.
- Output of the CI/CD pipeline is deployment of application code artifacts to production environment.
- If customers own the code, the CI pipeline will build and package the code otherwise it will take it from the artifacts released from the first type of applications.
SaaS Applications which are configured
- Examples are Salesforce CRM.
- Output of CI/CD pipeline is deployment of configuration and custom code artifacts to SaaS provider's application endpoints.
- From the perspective of the SaaS organization, output of CI/CD pipeline is a release version, and for each customer onboarded to the SaaS application, separate instance of the application is deployed to production environment.

Identify bugs by testing in non production environments.
Use acceptance criteria to write automated test scripts.
Create and maintain testing platform which is a set of tools to perform the testing.
executables, archives, installers, container images and virtual machine images for different operating systems and middlewares for testing tools like postman, jmeter, etc.
rollback, component, contract, integration, end to end, progressive delivery, synthetic, performance, resilience

Hardware and software
Data center installation and administration
Work devices like desktops, laptops, smartphones, virtual desktops, installation and administration
Compute
- Physical servers like mainframe, HP, etc.
- Archives, installers, container images and virtual machine images for OS with hardening.
- Patching
- OS administration like Linux administration, Windows administration, etc.
Storage
- Block, file and object
- SAN, NAS, NFS, Samba
- Backup
Network
- Create and maintain Network platform which manages the network components of the organization.
- First 5 layers of OSI Model
  - Physical Layer:
    - Cables (coaxial, twisted-pair, fiber-optic)
    - Connectors (RJ-45, BNC, SC, LC)
    - Repeaters
    - Hubs
  - Data Link Layer:
    - Frame
    - Network Interface Cards (NICs)
    - Bridges
    - Switches
  - Network Layer:
    - Packet
    - IP address
    - Routers
    - Multilayer Switches
    - Gateways
    - subnets
  - Transport Layer:
    - Segment
    - No specific devices, this layer deals with end-to-end communication protocols like TCP and UDP.
  - Session Layer:
    - Logical ports on the IP address
    - No specific devices, this layer manages the establishment, maintenance, and synchronization of communication sessions.
- Network administration
Private cloud
- VMware
Public cloud
- AWS
- Azure
- Google Cloud
Infrastructure as code

Create and maintain Security platform which is a set of tools to implement security practices.
Hardware and software security
Private cloud
Public cloud

Build, package and deploy application changes to non production and production environments.
Create and maintain DevOps platform which is a set of tools to implement DevOps practices to improve speed and quality of software delivery from ideation to feedback.
executables, archives, installers, container images and virtual machine images for different operating systems and middlewares for DevOps tools like hashicorp terraform, apache maven, etc.
Public cloud infrastructure as code.

Create and maintain Observability platform which is a set of tools to get traces, metrics and logs from applications and other tools and generate alerts, insights and dashboards.
Example tool is Collector component of OpenTelemetry application of observability organizational unit.
executables, archives, installers, container images and virtual machine images for different operating systems and middlewares for observability tools.

Create and maintain FinOps platform which is a set of tools to implement cost optimization practices.

Language, Framework, Messaging, Runtime
executables, archives, installers, container images and virtual machine images for different operating systems and middlewares for middleware like apache tomcat, jdk, python, etc.
Middleware infrastructure like aws eks etc.
Application middleware administration

In case of applications released as products, liason between customer who has deployed the application or using it as a service and different internal teams.

Discovery :
- Fill a questionnaire for each application component to collect the data. Then, use the data to make recommendations for the tools of various platforms.
- Use GenAI to scan all the application components code repositories and make recommendations for the tools of various platforms.
Implementation :
- Based on the recommendations, we need to create code repositories for these tools in the appropriate organization
- For example, if recommended middleware tool is apache tomcat because some application components are deployed to apache tomcat as war archives, then we need to create code repository for apache_tomcat application component of apache_tomcat application of middleware organizational unit.
  - It will have release branches for each major release of apache_tomcat which has been release by apache.
  - CI/CD pipeline will get the artifacts from apache and create executables, archives, installers, container images and virtual machine images for different operating systems and middlewares.