<p>The following figure describes the relationships between ECS and other cloud services.</p> <p><img src="https://obs-cn-shanghai.yun.pingan.com/pcp-portal/20202107104317-1f65c7b69204.png" style="height:436px; width:569px" /></p> <table border="1" cellpadding="0" cellspacing="0" style="width:0px"> <tbody> <tr> <td style="background-color:#ededed"> <p><strong>Cloud service</strong></p> </td> <td style="background-color:#ededed"> <p><strong>Relationship description</strong></p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Virtual Private Cloud (VPC)</p> </td> <td style="vertical-align:top"> <p>You need to create an ECS instance in a VPC. You can control access to the VPC through security groups, and connect an ECS instance to the Internet through services such as the NAT gateway and ELB.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Internet Gateway (IGW)</p> </td> <td style="vertical-align:top"> <p>You can log in to an ECS through the IGW.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Elastic Block Storage (EBS)</p> </td> <td style="vertical-align:top"> <p>EBS provides elastic block storage devices for ECS instances. After creating an ECS instance, you can increase the number and expand the storage capacity of hard disks as needed. You can also create snapshots of disk data to restore historical data at any time.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Argus</p> </td> <td style="vertical-align:top"> <p>You can view the real-time performance indicators, monitoring charts, and alarm records through Argus, or customize configurations and alarm information for key resources to learn about the status of resources, ensuring the stable operation of business.</p> </td> </tr> </tbody> </table>