When you want application modernization, it is important that, in the communication phase, that all companies have heterogeneous platforms. You need to communicate, and you need the transactions and all information online.

By implementing messaging technologies, businesses can use a consistent approach to connectivity, and decouple the business application from the complexity of handling failures, error recovery, transaction integrity, security, and scalability.

IBM WebSphere MQ

You can use WebSphere MQ to enable applications to communicate at different times and in many diverse computing environments, as shown

Communication 1

WebSphere MQ is messaging for applications. It sends messages across networks of diverse components. Your application connects to WebSphere MQ to send or receive a message. WebSphere MQ handles the different processors, operating systems, subsystems, and communication protocols it encounters in transferring the message. If a connection or a processor is temporarily unavailable, WebSphere MQ queues the message and forwards it when the connection is back online.

An application has a choice of which programming interfaces and programming languages it uses to connect to WebSphere MQ, as shown

Communication 2

WebSphere MQ is messaging and queuing middleware, with point-to-point, publish and subscribe, and file transfer modes of operation. Applications can publish messages to many subscribers over multicast.

Programs communicate by sending data to each other in messages instead of calling each other directly

Messages are placed on queues so that programs can run independently of each other, at different speeds and times, in different locations, and without having a direct connection between them.

Applications send messages to a queue, or to a list of queues. The sender must know the name of the destination, but not where it is.

Applications publish a message on a topic, such as the result of a game that is played by a team. WebSphere MQ sends copies of the message to applications that subscribe to the results topic. They receive the message with the results of games that are played by the team. The publisher does not know the names of subscribers, or where they are.

Multicast is an efficient form of publish/subscribe messaging that scales to many subscribers. It transfers the effort of sending a copy of a publication to each subscriber from WebSphere MQ to the network. When a path for the publication is established between the publisher and subscriber, WebSphere MQ is not involved in forwarding the publication.

File transfer
Files are transferred in messages. WebSphere MQ File Transfer Edition manages the transfer of files and the administration to set up automated transfers and log the results. You can integrate the file transfer with other file transfer systems, with WebSphere MQ messaging,
and the web.

WebSphere MQ Telemetry is messaging for devices. WebSphere MQ connects device and application messaging together. It connects the internet, applications, services, and decision makers with networks of instrumented devices. WebSphere MQ Telemetry has an efficient messaging protocol that connects many devices over a network. The messaging protocol is published so that it can be incorporated into devices. You can also develop device programs with one of the published programming interfaces for the protocol.

Scope of WebSphere MQ
The following items describe the scope of WebSphere MQ:

  • WebSphere MQ sends and receives data between your applications and over networks.
  • Message delivery is ensured and decoupled from the application. It is ensured because WebSphere MQ exchanges messages transactionally, and decoupled because applications do not have to check that the messages they sent are delivered safely
  • You can secure message delivery between queue managers with SSL/TLS.
  • With Advanced Message Security (AMS), you can encrypt and sign messages between being sent by one application and retrieved by another.
  • Application programmers do not need to have communications programming knowledge.
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