# Configuration

<dl class="api-definition">
<dt>Concept</dt>
<dd><a href="/docs/development/opcua/client/configuration">Configuration</a></dd>
</dl>

| Type | Description |
|---|---|
| [OpcApplicationConfiguration](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcapplicationconfiguration/) | Represents the configuration of an OPC UA application, which completes missing settings using the defaults of the SDK. |
| [OpcCertificateManager](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opccertificatemanager/) | Provides a set of static (Shared in Visual Basic) methods to manage certificates. |
| [OpcCertificateSettings](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opccertificatesettings/) | Defines the setup of an application instance certificate. |
| [OpcCertificateStoreInfo](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opccertificatestoreinfo/) | Represents a certificate store, which provides access to the certificates stored at its [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opccertificatestoreinfo/members#path). |
| [OpcCertificateStores](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opccertificatestores/) | Provides access to the set of OPC UA predefined certificate stores typically used by an OPC UA application to maintain its certificates. |
| [OpcClient](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/) | Provides session based methods to access OPC UA server services. |
| [OpcClientKeepAlive](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclientkeepalive/) | Provides keep-alive options used by a client to monitor an established connection and recover from unexpected disconnection. |
| [OpcClientSecurity](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclientsecurity/) | Defines the different security configurations supported by the [OpcClient](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/). |
| [OpcTransport](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opctransport/) | Provides transport options used by an application instance to control the behavior of the operation, communication and data flow between the opponent applications. |