> ## Documentation Index > Fetch the complete documentation index at: https://developer.upsun.com/llms.txt > Use this file to discover all available pages before exploring further. # Image properties > Details about image properties in the Upsun config.yaml file **Note:** The properties below are available in **both** [single-runtime image](/docs/configure-apps/app-reference/single-runtime-image) and [composable image](/docs/configure-apps/app-reference/composable-image) types. For most of these properties, the syntax and details are the same for both image types. Differences in meaning and syntax are noted as needed for each property. To learn about the properties that are **unique to each image type**, refer to the top-level properties described in the [single-runtime image](/docs/configure-apps/app-reference/single-runtime-image) topic or the primary application properties described in the [composable image](/docs/configure-apps/app-reference/composable-image) topic. Pick a property to jump to its reference: Access & Security Networking Networking Runtime Build & Deploy Storage & Data Relationships Build & Deploy Storage & Data Runtime Runtime