There are Several tools and technologies were widely used in the field of IT services. Keep in mind that the technology landscape evolves rapidly, so there may be new tools or changes in popularity since then. Here are some tools and technologies that were prominent in IT services:

       1.  Cloud Computing Platforms:

1. • Amazon Web Services (AWS): Provides a wide range of cloud computing services.
   • Microsoft Azure: A comprehensive cloud platform offering various services.
   • Google Cloud Platform (GCP): Offers cloud computing, storage, and machine learning services. 

    2. DevOps Tools:

• • • Jenkins: An open-source automation server for building, testing, and deploying code.
    • Docker: Containerization platform for packaging and distributing applications.
    • Kubernetes: Container orchestration for automating deployment, scaling, and management.

   3. Configuration Management and Infrastructure as Code (IaC):

• • Ansible: Automates software provisioning, configuration management, and application deployment.
  • Terraform: Infrastructure as Code tool for building, changing, and versioning infrastructure.

   4.  Monitoring and Logging:

• • Prometheus: Open-source monitoring and alerting toolkit.
  • Grafana: Open platform for analytics and monitoring.
  • ELK Stack (Elasticsearch, Logstash, Kibana): Used for log analysis and visualization.

   5. Collaboration and Communication:

1. • Slack: Messaging and collaboration platform.
   • Microsoft Teams: Integrated communication and collaboration platform.

   6. Version Control:

1. • Git: Distributed version control system widely used for source code management.

  7. Container Orchestration:

• • Docker Swarm: Clustering and scheduling tool for Docker containers.

   8. Continuous Integration/Continuous Deployment (CI/CD):

• • GitLab CI/CD, Jenkins: Automate the process of integrating code changes and deploying applications.

  9. Programming Languages:

• • Python, Java, JavaScript, Go: Widely used programming languages in IT services.

  10. Security Tools:

• • OpenVAS: Open-source vulnerability scanner.
  • Security Information and Event Management (SIEM) tools: Examples include Splunk, ELK Stack.

   11. Database Management Systems:

• • MySQL, PostgreSQL, MongoDB: Commonly used databases for various applications.

   12. Virtualization:

• • VMware, VirtualBox: Virtualization tools for creating and managing virtual machines.

   13. Network Monitoring:

1. • Wireshark: Network protocol analyzer.
   • Nagios: Open-source monitoring system for network and infrastructure monitoring.

  14.  Automation Scripting:

• • Bash, PowerShell, Python: Scripting languages used for automation tasks.

 15.  Mobile Development:

• • React Native, Flutter: Frameworks for cross-platform mobile app development.

Keep in mind that the popularity and usage of tools can change over time, and new technologies may emerge. It’s essential to stay updated with the latest trends in the IT industry.