Some Integration of Legacy Applications can be achieved by using special Software called Middleware to create an interface or bridge between two different Systems.
MIDDLEWARE
Is a Software that connects two otherwise separate Applications, enabling them to communicate with each other and to exchange data.
Organizations can choose to write their own Software to connect one application to another but increasingly are purchased specific software
package called ‘’Enterprise Application Integration Software (EAI) for
this purpose to connect disparate Applications, or Application clusters.
Enterprise Application Interface Software enables multiple Systems to exchange data through a single Software hub rather than building countless Custom software interfaces to link Systems.