Advantages

EIPs can be flexibly bound to or unbound from ECSs, BMSs, NAT gateways, load balancers, or virtual IP addresses. EIP bandwidths can be scaled according to service changes.

EIPs are available on a pay-per-use (billed by bandwidth or traffic) or yearly/monthly (billed by bandwidth) basis. You can use shared bandwidths to enjoy lower bandwidth costs. Generally, if you have frequent data transfer needs, a yearly/monthly subscription is more cost-effective.

EIP binding, unbinding, and bandwidth adjustments take effect immediately.