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Entree Modernization Guide

Legacy Application/Data Access3270Application Development

Entree is a legacy application/data access product by CSI International. Explore technical details, modernization strategies, and migration paths below.

Product Overview

Entree provides a way to web-enable CICS applications, allowing users to access existing 3270 screens through a web browser without modifying the underlying application code.

Define screen mappings to translate 3270 screens into web pages.

Modernization Strategies

Rehost

Timeline:
6-12 months

Lift-and-shift to cloud infrastructure with minimal code changes. Fast migration with lower risk.

Refactor (Recommended)

Timeline:
18-24 months

Optimize application architecture for cloud while preserving business logic. Best ROI long-term.

Replatform

Timeline:
3-5 years

Complete rewrite to cloud-native architecture with microservices and modern tech stack.

Frequently Asked Questions

General

What is Entree and what does it do?

Entree web-enables CICS applications, allowing users to interact with existing 3270 screens through a web browser without modifying the underlying application code. It can run alongside CICS or as a standalone transaction manager, supporting most EXEC CICS calls.

How does Entree integrate with other systems?

Entree can be configured to use CICS Web Services, enabling integration with other systems and applications. It also supports standard web protocols for communication.

Can Entree run as a standalone transaction manager?

Entree can operate either in conjunction with CICS or as an independent transaction manager. This flexibility allows it to adapt to different environments and requirements.

Technical

What types of APIs does Entree expose?

Entree exposes APIs that allow integration with other systems. While specific API details depend on the configuration, it can leverage CICS Web Services for SOAP or REST-based interactions. It also supports integration through standard web protocols.

What are the main system components of Entree?

Entree's architecture includes components for screen mapping, transaction management, and web serving. These components communicate using internal protocols and standard web protocols.

Does Entree support EXEC CICS calls?

Entree accepts most EXEC CICS calls, allowing existing CICS applications to be web-enabled with minimal changes. It supports standard web protocols for communication.

Business Value

What is the business value of using Entree?

By web-enabling CICS applications, Entree allows organizations to extend the life of their legacy systems and provide modern access to existing functionality. This can reduce development costs and improve user experience.

How does Entree reduce the effort required to modernize legacy applications?

Entree allows users to access existing 3270 screens through a web browser without requiring modifications to the underlying application. This reduces the time and effort required to modernize legacy applications.

Security

What authentication methods are supported by Entree?

Entree supports various authentication methods, including integration with existing security systems. The specific methods depend on the configuration and the environment in which Entree is deployed.

What audit/logging capabilities exist in Entree?

Entree provides audit logging capabilities to track user activity and system events. These logs can be used for security monitoring and compliance purposes.

Operations

What administrative interfaces are available in Entree?

Entree provides administrative interfaces for managing users, configuring system parameters, and monitoring system performance. The specific interfaces depend on the deployment environment.

What monitoring/logging capabilities exist in Entree?

Entree provides monitoring and logging capabilities to track system performance and identify potential issues. These capabilities can be used to ensure the smooth operation of the system.

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