What is EDI? Electronic data interchange explained

Electronic data interchange, or EDI, is the computer-to-computer exchange of structured business documents between trading partners. It replaces emails, PDFs and repeated data entry with information that each company's systems can process.

How does an EDI system work?

A business system creates a document such as a purchase order. EDI software translates it into the agreed standard, validates the required fields and sends it through a secure connection. The receiving EDI platform translates the message into a format its ERP or accounting software understands.

Successful EDI integration depends on more than transport. It also requires data mapping, business rules, monitoring and a clear process for exceptions.

Common EDI transactions

• Purchase orders and order changes
• Order acknowledgements
• Advanced shipping notices
• EDI invoices and credit notes
• Product, pricing and inventory messages
• Remittance advice

Automating EDI orders and invoice processing can reduce rekeying, shorten response times and improve document status visibility.

EDI software, web EDI and managed EDI

Traditional integrated EDI software connects directly with internal systems and suits repeatable transaction volumes. Web EDI provides a browser-based portal for partners that cannot support full system integration. Managed EDI providers may handle mapping, connectivity, monitoring and trading-partner onboarding.

The right model depends on document volume, internal technical capacity, partner requirements and how quickly new connections must be added.

EDI standards and messaging

Common formats include EDIFACT, ANSI X12, XML and partner-specific flat files. Connections may use AS2, SFTP, APIs or an EDI network. Two companies can use the same named standard and still require mapping because their mandatory fields and business rules differ.

Benefits of EDI processing

• Less manual entry and fewer transcription errors
• Faster order and invoice cycles
• Consistent validation before documents enter the ERP
• Better tracking of sent, received and failed messages
• Capacity to process more transactions without matching administrative growth

Choosing an EDI provider

Ask which standards, protocols and ERP systems are supported. Confirm how mappings are maintained, how failures are reported, who manages partner testing and what support is available across time zones. The best EDI solution is the one that fits your real partner network and operational process.