## 2 System Design and Its Components  
The AWS provides infrastructure and services for satellite ground station operations, data storage, and distribution. The collected satellite information can be stored using AWS Elastic Compute Cloud (EC2) and AWS Simple Storage Service (S3) systems. It enables further processing of stored satellite information using EC2, and pre-processed data or ARD can be made available to users through the AWS marketplace, which is a catalog that hosts various products such as software, data, and services.  
The Landsat, Sentinel, and MODIS satellite images provide features to process data with platforms such as GEE and publicly available AWS S3. These platforms are easily accessible and available for anyone to download and use through an open policy. However, commercial satellite images have limited data access and cannot be directly verified before purchase. In Korea, the high-resolution KOMPSAT series has been developed, launched, and operated by the KARI. KOMPSAT image sets can be searched and easily viewed by users through utilization support services of satellite images that provide image ordering services and primary index and metadata. However, the actual data must be purchased to use. Furthermore, the service operates in a cloud environment and offers a feature that enables users to experience the image analysis service by providing test images in some regions.  
The development of various information technology (IT) technologies has expanded the scope of satellite information utilization. However, most active utilization is observed for open satellites, while there needs to be more consideration for ARD generation and utilization of high-resolution commercial satellites. Therefore, this study proposes a utilization approach for the KOMPSAT series using a multi-cloud model. The multi-cloud model utilizes a combination of proprietary and open cloud computing technologies. Since most commercial satellites require the purchase of original data, security is crucial, and data management is typically handled by the organization that launched the satellite. Multi-cloud and hybrid cloud refer to the use of multiple cloud services, but significant differences exist. Multi-cloud refers to the independent use of services from multiple cloud providers. On the other hand, hybrid cloud refers to using services from one or more cloud providers in a single, unified environment. The advantage of multi-cloud is greater flexibility and choice. Users can select the cloud provider that best meets their specific requirements for an application, and they can change their cloud-based environment as needed. On the other hand, a hybrid cloud is easier to secure and manage because users must use a single, unified environment.  
There are many cases of both uses of OpenStack and AWS for cloud computing. For example, an organization might use AWS for its public-facing web applications and OpenStack for its internal infrastructure and data processing tasks. It allows the organization to take advantage of both cloud platforms' benefits, such as AWS's high availability and scalability and OpenStack's security and data control. Tools and services also allow organizations to manage and orchestrate workloads across multiple cloud platforms, such as AWS and OpenStack. For example, the OpenStack cloud management platform supports integration with AWS through tools such as an OpenStack EC2 API, which enables OpenStack users to manage and deploy AWS resources from within the OpenStack dashboard.