| 正式 | 略称 |
| Application Programming Interface | API |
| Ahead x Day | AxD |
| Ahead x Month | AxM |
| Ahead x Week | AxW |
| Basic Design | BD |
| Basic Investigation | BI |
| Basic Structure(?) | BS |
| Behind x Day | BxD |
| Behind x Month | BxM |
| Behind x Week | BxW |
| Coding | CD |
| Combination Debug | CD |
| Component Failure Impact Analysis | CFIA |
| Code Test | CT |
| Detail Design | DD |
| Development | Development |
| External Design | ED |
| Foundation Design | FD |
| Function Design | FD |
| Feasibility Study | FS |
| Go Live | Go Live |
| Gateway | |
| Internal Design | ID |
| Internet Protocol address | IP address |
| Integration Test | IT |
| Integration Test Phase A | ITa |
| Integration Test Phase B | ITb |
| Integration Test Phase C | ITc |
| Knockout Factor | KF |
| Kick Off | KO |
| Mission Critical | |
| Module Design | MD |
| Make | MK |
| Outline Design | OI |
| On Schedule | ON |
| Operation Test | OT |
| Program Design | PD |
| Problem Determination | PD |
| Programing | PG |
| Project Leader | PL |
| Project Manager | PM |
| Proof of Concept | POC |
| Proof of concept | PoC |
| Product | Product |
| Program Structure Design | PS |
| Program Test | PT |
| Product Test | PT |
| Relay Computer | RC |
| Request for Proposal | RFP |
| Requirements Specification | RS |
| System Architectural design | SA |
| System Design | SD |
| Structure Design | SD |
| System Debug | SD |
| System Planning | SP |
| System Structure Design | SS |
| Show Stopper | SS |
| System Test | ST |
| Test | Test |
| Task Leader | TL |
| Test Program | TP |
| Unit Debug | UD |
| User Interface | UI |
| Unit Test | UT |
| User Test | UT |
| Virtual Private Network | VPN |
| Work Breakdown Structure | WBS |