| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/aws/smithy-go/encoding/httpbinding | |
| github.com/aws/smithy-go/middleware | Package middleware provides transport agnostic middleware for decorating SDK handlers. |
| github.com/aws/smithy-go/transport/http | Package http provides the HTTP transport client and request/response types needed to round trip API operation calls with an service. |
| io | Package io provides basic interfaces to I/O primitives. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| math/big | Package big implements arbitrary-precision arithmetic (big numbers). |
| net/url | Package url parses URLs and implements query escaping. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |