IaC: Pulumi & Terraform, Ansible Containers: Helm & Kubernetes, Buildah & Docker Public cloud: AWS, Azure, Linode On-premise private & hybrid cloud: OpenNebula, KVM, Firecracker Monitoring: Zabbix & Netdata, Prometheus & Grafana, ELK CI/CD: Jenkins (including Groovy), GitLab, SonarCube DBMS: IBM DB2 & PostgreSQL via nHibernate, Redis & Tarantool, Debezium Analytics: Pentaho & ClickHouse OS: Devuan, OpenBSD Guest OS: ^above, Alpine, AntiX ...