The Standard-HDRI World Shader is a basic setup for using High Dynamic Range Images (HDRIs) in Blender. This shader allows you to create a realistic environment by applying an HDRI as the background and lighting source in your scene.
Strength: This control allows you to adjust the strength or intensity of the HDRI. By increasing the strength, you can make the lighting and background more pronounced, while reducing it will result in a more subtle effect.
Rotation: The Rotation control enables you to adjust the X, Y, and Z rotation of the HDRI. This feature is especially useful when aligning the HDRI with the scene or achieving a desired composition. You can rotate the HDRI to position specific elements or match the lighting direction in your scene.