Stucco is a plaster-like material that's used for both interior and exterior finishes. It's a durable product that is weather resistant and is composed of aggregates, a binder like cement or lime, and water. Stucco is typically applied in multiple layers to help create a decorative and textured surface.
Maintaining your stucco surface involves basic cleaning to remove dirt and debris and inspecting for cracks or damage so you can have them repaired quickly to prevent water from getting inside. It's also a good idea to repaint your stucco every few years to help maintain its appearance.
Some experienced DIYers will be able to apply stucco safely and effectively, but for larger applications, it's usually best to leave it to a professional who has all the required tools, equipment, and troubleshooting experience.