Mark Harrison's blog post introduces two new step templates designed to enhance the integration of Octopus with Azure App Configuration. The "Azure AppConfig KV - Retrieve Values" step template allows users to fetch key-value pairs from an Azure App Configuration instance, creating output variables for further use in deployments or runbooks. The "Azure Function - Set AppSettings from Azure AppConfig" step template retrieves values and adds them directly to an Azure Function's application settings. Both templates necessitate Azure authentication, typically via Microsoft Entra ID, and require users to configure various parameters such as Azure account permissions, key names, and retrieval methods. Advanced features include support for wildcard searches and handling multiple keys, although certain combinations, like custom output variable names with wildcards, are not supported. These step templates aim to streamline deployments by efficiently managing application settings and configurations within Azure environments.