Infrastructure includes public, private, and hybrid cloud computing platforms from major vendors like Azure, AWS, Google, and IBM. These platforms provide infrastructure as a service (IAAS), platform as a service (PAAS), and software as a service (SAAS). DevOps practices are used for cloud automation, configuration, development, application release, and service automation with tools like ServiceNow, Puppet, Chef, Ansible, and Docker. Key technologies include virtualization, networking, security, continuous integration, configuration management, and a wide range of programming languages, databases, and operating systems.