Ancient time

• EDI (Electronic Data Interchange) was born
• Internet is about to pop up on the scene
• Big companies discovered that some supply chain processes with their customers/suppliers are more effective if they are done electronically
• X12 and EDIFACT message standards were created
• A lot of business logic is involved in the integration
• Connections are point-to-point

Middle Ages

• The canonical concept was invented to support B2B processes where more and more similar parties are involved
• Monolithic architecture with reusable code parts is decreasing development cost and simplifying support
• Multiple Standard Transmission protocols are commonly used: RFC 675, TCP/IP
• Integration contains a lot of transformation but limited business logic
• XML, W3C and SOAP reach the pinnacle
• First tries with ESB (Enterprise Service Bus) approach

Early Modern period

• Dataminig is the key
• Moving everything to Cloud
• REST/JSON can do more jobs – we don´t need to use so many protocols
• Agile approach beats companies – the waterfall should be forgotten
• Microservices concept are more used as Monolithic one
• Responsibility for transformation was moved to the application level

Late Modern period (today)

• Hybrid Integration
• CI/CD and DevOps ending an era of Cowboy Development
• Data Specialists are comming for integrated data
• API (REST/JSON) is still the best integration way
• "WHATEVER as s service" solutions are giving you so many options - which one is THE BEST?