z/OS Connect Modernization Guide

z/OS Connect enables the creation of RESTful APIs for z/OS applications and data. It supports services, APIs, and events, allowing for integration with modern applications.

Common operations include creating APIs, deploying services, configuring interceptors, managing users and security, and monitoring API usage. Configuration is primarily done through server.xml and associated configuration files.

z/OS Connect supports RESTful APIs. API endpoint patterns are typically defined based on the service name and operations. For example, a service named 'Customer' might have endpoints like '/Customer/getDetails' or '/Customer/update'.

The main components include the z/OS Connect server, API requester, service providers (such as CICS, IMS, Db2, and IBM MQ), and interceptors. These components communicate through defined interfaces and protocols.

The `server.xml` file is the primary configuration file. It defines services, APIs, security settings, and other parameters. The z/OS Connect Enterprise Edition provides a web-based user interface for configuration.

z/OS Connect exposes RESTful APIs. These APIs are defined using OpenAPI (Swagger) definitions. Integration is supported through various programming languages via REST clients. Communication occurs over HTTP/HTTPS.

The z/OS Connect server, API requester, and service providers (CICS, IMS, Db2, IBM MQ) are key components. Communication occurs through defined interfaces and protocols, often involving HTTP/HTTPS.

Administrative interfaces include a web-based console and command-line interface. User management is handled through the configured security provider (e.g., SAF, LDAP).

z/OS Connect allows organizations to expose their z/OS assets as RESTful APIs, enabling integration with modern applications and cloud services. This can unlock new business opportunities and improve agility.

By exposing z/OS applications as APIs, organizations can create new digital experiences, integrate with mobile apps, and participate in the API economy. This can lead to increased revenue and customer satisfaction.

z/OS Connect simplifies the integration of z/OS applications with other systems, reducing the complexity and cost of traditional integration methods. This allows organizations to respond more quickly to changing business needs.

z/OS Connect supports authentication methods such as LDAP, SAML 2.0, and X.509 certificates. It uses a role-based access control (RBAC) model to manage user permissions.

z/OS Connect uses TLS/SSL for encrypting communication between clients and the server. Data at rest is protected by the underlying z/OS security mechanisms.

z/OS Connect provides audit logging capabilities, recording API access and usage. These logs can be used for security monitoring and compliance purposes.

Access control is managed through a role-based access control (RBAC) model. Users are assigned roles, and roles are granted permissions to access specific APIs and resources.

z/OS Connect can be monitored using the z/OS Connect Enterprise Edition web console, SMF records, and standard z/OS monitoring tools. Logging is configured through the `server.xml` file.

Key configuration parameters include API definitions, service configurations, security settings, and interceptor configurations. These parameters are primarily managed through the `server.xml` file and associated configuration files.

User management is handled through the configured security provider, such as SAF or LDAP. Users and groups are defined in the security provider, and z/OS Connect uses this information for authentication and authorization.

To deploy a service, you define the service in `server.xml`, configure the connection to the backend system (CICS, IMS, etc.), and then enable the service. APIs are defined using OpenAPI and linked to the services.