| 略語 | フルスペル |
|---|---|
| I/O | Input Output |
| IaaS | Infrastructure as a Service |
| ICANN | the Internet Corporation for Assigned Names and Numbers |
| ICMP | Internet Control Message Protocol |
| IDC | Internet Data Center |
| IDE | Integrated Drive Electronics |
| IDS | Intrusion Detection System |
| IEC | International Electrotechnical Commission |
| IEEE | Institute of Electrical and Electronic Engineers |
| IETF | Internet Engineering Task Force |
| IIS | Internet Information Services |
| IKE | Internet Key Exchange |
| IMAP | Internet Message Access Protocol |
| IoE | Internet of Everything |
| IoT | Internet of Things |
| IP | Internet Protocol |
| IPA | Information-technology Promotion Agency |
| IPS | Intrusion Prevention System |
| ISDN | Integrated Services Digital Network |
| ISMS | Information Security Management System |
| ISP | Internet Service Provider |
| ITIL | Information Technology Infrastructure Library |