Web based EDI conducts EDI using an web browser via the Internet. Here the businesses are allowed to use any browser to transfer data to their business partners. Web based EDI is easy and convenient for small and medium organizations

(i) In EDI, Due to the complexity, branch-specific subsets of EDIFACT have developed.
(ii) These subsets of EDIFACT indude only the functions relevant to specific user groups

Transfer of money from one bank account to another, via computer-based systems is known as Paperless Payment.

Due to the complexity, branch-specific subsets of EDIFACT have developed. These subsets of EDIFACT include only the functions relevant to specific user groups.
Example: CEFIC - Chemical industry
EDIFURN - Furniture industry
EDIGAS - Gas business

EDI documents the following are the major EDI types.
(i)  Direct EDI
(ii)  EDI via VAN
(iii)  EDIvia FTP/VPN, SFTP,FTPS
(iv)  Web EDI
(v)  Mobile EDI.

(i) The EDI standard is mainly divided into the following aspects:
(ii) Basic Standards
(iii) Code Standards
(iv) Message Standards
(v) Document Standards
(vi) Management Standards
(vii) Application Standards
(viii) Communication Standards And
(ix) Security Standards.

(i) A segment is a three-character alphanumeric code.
(ii) These segments are listed in segment tables .
(iii) Segments may contain one, or several related user data elements.

(i) The top level of EDIFACT structure is Interchange.
(ii)  An interchange may contain multiple messages.
(iii) It starts with UNB and ends with UNZ.

Character	Uses
Apostrophe (')	segment terminator
Plus sign (+)	segment tag and data element separator
Colon (:)	component data element separator
Question mark (?)	Release character
Period (.)	decimal point.

Electronic data interchange architecture specifies four different layers namely
(i) Semantic layer
(ii) Standards translation layer
(iii) Transport layer
(iv) Physical layer

EDIFACT Structure:
EDIFACT is a hierarchical structure where the top level is referred to as an interchange, and lower levels contain multiple messages. The messages consist of segments, which in turn consist of composites. The final iteration is a data element.

EDI was developed to solve the problems inherent in paper-based transaction processing and in other forms ofelectronic communication. Implementing EDI system offers a company greater control over its supply chain and allow it to trade more effectively. It also increases productivity and promotes operational efficiency.
The following are the other advantages of EDI.
(i) Improving service to end-users
(ii) Increasing productivity
(iii) Minimizing errors
(iv) Slashing response times
(v) Automation of operations
(vi) Cutting costs
(vii) Integrating all business and trading partners.
(viii) Providing information on process status
(ix) Optimizing financial ratios.

The types of EDI were constructed based on how EDI communication connections and the conversion were organized. Thus based on the medium used for transmitting EDI documents the following are the major EDI types:
(i) Direct EDI
(ii) EDI via VAN
(iii) EDI via FTP/VPN, SFTP, FTPS
(iv) Web EDI
(v) Mobile EDI
1. Direct EDI/point-to-point : It is also called as Point-to-Point EDI. It establishes a direct connection between various business stakeholders and partners individually. This type of EDI suits to larger businesses with a lot of day to day business transactions.
2. EDI via VAN : EDI via VAN (Value Added Network) is where EDI documents are transferred with the support of third party network service providers.Many businesses prefer this network model to protect them from the updating ongoing complexities of network technologies.
3. EDI via FTP/VPN, SFTP, FTPS : When protocols like FTP/VPN, SFTP and FTPS are used to exchange of EDI based documents through the Internet or Intranet it is called as EDI via FTP/VPN, SFTP, FTPS.
4. Web EDI : Web based EDI conducts EDI using an web browser via the Internet. Here the businesses are allowed to use any browser to transfer data to their business partners.Web based EDI is easy and convenient for small and medium organizations.
5. Mobile EDI - When smartphones or other such handheld devices are used to transfer EDI documents it is called as mobile EDI.Mobile EDI applications considerably increase the speed of EDI transactions.