eCorpOne Co., Ltd. - We are IT infrastructure integration and support & solar energy development and management company located in Tokyo Japan.

We are Type-2 Telecommunications registered carrier: A-23-1232 and are Microsoft certified professionals.

eCorpOne will have company holiday between December 22, 2022 and January 4, 2023. Customers having 24/365 maintenance or retainer contract can have our services during the period. Thank you.

We are IT integrator in Tokyo, Japan.

IT infrastructure design/management

We provide IT infrasutructure design and maintenance services in English and in Japanese languages. We design and manage corporate network and server environment, including Active Directory, VMWare, and various disaster recovery systems.

We provide on site support service, also.

We do not accept any sub-contracts. If you have a client requiring services in Japan, please introduce us. Thank you.

Our company phone number:

Phone: +81-3-5577-67700
(Our phone system requires at least 10 seconds to start ringing. Please do not hang up quickly)

FAX: +81-3-5577-6710

Normal business hours:

9:00am to 7:00pm JST
* We
offer 24 hours/365 days support services around Tokyo, Japan.

IT integration for International companies

IT infrastructure deployment & support services in Japan

  • 24/365 Break-fix one time urgent visit & regular maintenance service.

  • IT equipment warehousing service for 24 hours/365 days delivery with SLA 4 hours in Tokyo.

  • Deployment of IT infrastructure for global companies.

  • VMWare/Hyper-V/KVM virtualized servers (Windows Active directory and Linux servers) implementation projects for offices in Japan. Professional management of efficient virtual disk management and backup, including shrinking/expanding of virtual disks, moving physical servers into virtual environment, etc.

  • Backup solutions: Veeam, Synology Active Backup, BackupExec, tape backup systems, and Apple Time Capsule support.

  • Network layer security systems and VPN solutions (Fortigate, Cisco, Juniper, Sonicwall, and Untangle).

  • UPS and automatic server shutdown for physical and virtual systems.

  • Supports Office 365, G suite, domain/email hosting implementation and support.

  • Experience in IT for managing global companies since year 2006.


Solar energy plant design and operation


Payment software and hardware combined solutions - including web and kiosk terminal payment solutions

  • Credit card/cash payment terminal (Multiple currencies)

  • Web based management solution allowing analysis with revenue at multiple locations.

  • Barcode reading/printing solution allowing to read data over LAN.

  • Member card solution (Re printable on the surface of PET card, which can be used to show member points)