S3 Transfer Acceleration vs Direct Connect

a bucket-level feature that enables fast, easy and secure transfers of files over long distances between your client and an S3 bucket
how: it takes advantages of the globally distributed edge locations in CloudFront, as the data arrives at an edge location, the data is routed to S3 over an optimised network path
it's not suitable if transfer disruption is not tolerable, but you can utilise S3 Multipart Upload

The data will be transported through a private physical network connection between AWS and on-premise data centres.
It doesn't involve the Internet, instead it uses dedicated, private network connections between your intranet and AWS VPC.
It's a good choice if you will be transferring data to AWS on an ongoing basis

Site-to-Site VPN: enables you to securely connect your on-premises network or branch office site to your VPC
Client VPN: enables you to securely connect users to on-premises network or AWS
Utilizes IPSe to establish encrypted network connectivity between your intranet and AWS VPC over the Internet.

petabyte-scale data transport solution that uses secure appliances to transfer large amount data into and out of AWS
a good choice if:
- you need to more securely and quickly transfer terabytes to many petabytes of data to AWS
- if you don't want to make expensive upgrades to your network infrastructure
- if you frequently experience large backlogs of data
- if you're located in a physically isolated environment
- if you're in an area where high-bandwidth Internet connections are not available or cost-prohibitive
As a rule of thumb, if it takes more than one week to upload your data to AWS using the spare capacity of your existing Internet connection, then you should consider using Snow.
- For 100 Mbps connection, to transfer 100TB, you need more than 100 days.

A type of Snowball device with on-board storage and compute power for select AWS capabilities
It can process data locally, run edge-computing workload, and transfer data to or from the AWS Cloud
It can transfer data at speeds faster than the Internet by shipping the data in the devices through a regional carrier.
Two options for device configurations: Storage Optimized and Compute Optimized.
Shipping: it make take up to 4 weeks to provision and prepare the device for your job before it is shipped (1 day or 2 days shipping).

exabyte-scale data transfer service, can transfer up to 100PB per Snowmobile
it is Snowball with larger storage capacity, it's a mobile truck
use Snowmobile if you need to migrate large datasets of 10PB or more in a single location
use Snowball if you need to migrate datasets less than 10PB or distributed in multiple locations
Ref: S3 Transfer Acceleration vs Direct Connect vs VPN vs Snowball Edge vs Snowmobile