1. Design/build/operation systems ( 시스템 설계/구축/운영 ) - DNS, DB, WEB, Proxy, LB, NTP, LDAP, Radius, Ansible2. system containerization ( 시스템 컨테이너화 ) - docker, docker-compose, harbor3. CI/CD with gitlab, pipeline with gitlab-runner ( gitlab, gitlab runner를 이용한 CI/CD, 파이프라인 운영 ) - nginx, dns, mrtg config file4. Establishment of centralized log system for analyzing various logs such as CDN, DDoS, Streaming, Network ( 로그 검색 및 관리를 위한 중앙집중로그 시스템 구축 및 운영 - CDN, DDoS, Streaming, Network, Firewall ) - Vector / Kafka / Elasticsearch / Loki5. System improvement for enhanced monitoring ( 모니터링을 위한 시스템 운영 ) - Prometheus / alertmanager / cortex / zabbix6. Developed alarm program for monitoring internal processes ( 내부 프로그램 알람을 위한 프로그램 개발 ) - php / go / nestjs7. Provide guidance on system improvements based on customer needs ( 고객 운영에 대한 시스템 가이드 지원 )8. operation of vIDC network ( vIDC 센터 네트워크 운영 ) - EBGP / IBGP 9. Improved nginx watermark opensource according to customer needs

- Design and operation of multi-center interconnection networks- Traffic coordination for multiple ISP connections- Design and Operating an Image, Streaming CDN System

- vIDC Network Operations- Operate vIDC Internal Systems