Aspera Transfer Service

Aspera Transfer Service (ATS) is a hosted multi-tenant software service running in the Cloud that enables high-speed upload and download of large files and large data sets directly into Cloud object storage that you provide. Using the patented Aspera FASP® high-speed transfer protocol, customers can quickly move data of any size over any distance at line speed. The unique Direct-to-Cloud capability integrates with the underlying cloud storage interfaces to enable the fastest file uploads and downloads while adding key transfer management features such as pause, resume, reporting and encryption over the wire and at rest. 

Click here to learn more about ATS with these frequently asked questions.




While the cloud offers many benefits, moving your big data to the cloud can be challenging. Traditional transfer software technologies are slow and unreliable, and shipping physical disk storage is time consuming, expensive and exposes your data to unnecessary security risks.

Aspera Transfer Service is the ideal solution for high speed, large volume, secure data ingest directly to and from cloud storage. Using Aspera products such as the Desktop & Command Line Clients, FaspexSharesFiles, or an Aspera API, users can transfer and synchronize files at maximum speed directly to scale-out cloud object storage such as AWS S3, SoftLayer Swift, Azure Blob, and Google Cloud Storage. Aspera has developed a high-speed software interface to the Aspera FASP protocol which directly interoperates with the underlying object storage APIs providing maximum speed regardless of distance, robust security, predictable transfer times, and a rich set of transfer management features.


All Aspera Files subscriptions include an ATS subscription allowing Files users to seamlessly connect their cloud storage of choice directly into their Files organization and workspaces. Files administrators simply add an ATS access key as their Files Node credential, and the corresponding storage root is instantly available to home new Workspaces or to create and share new Shared Folders. All Files operations are seamlessly supported from the configured storage location.


Organizations use the Aspera Transfer Service to migrate large volumes of unstructured data to cloud storage. The transfer service comes with a desktop and command line client, can be used to initiate, automate and monitor data moving to cloud storage. In addition to the included Aspera client, many other transfer initiation options are supported, including OrchestratorConsole (smart transfers), Aspera Noded REST API (/ops/transfers), Aspera FASP Manager (local libraries). Data migration scenarios supported include on premises to cloud, cloud to on premises and cloud to cloud migrations.


Organizations that want to leverage the benefits of cloud to deliver and collaborate using Aspera Faspex or Shares, can do that with Aspera Transfer Service (ATS). By connecting Aspera Faspex or Shares applications to include ATS, organizations can leverage multiple benefits of cloud infrastructure. For a delivery and collaboration system, there are many benefits to leveraging cloud infrastructure, such as access to scalable and durable cloud storage, near line cloud archive storage, scaleable bandwidth for burstable FASP throughput, compute systems available on demand (for data processing), databases, etc.


Organizations that have existing cloud applications and SaaS solutions can now easily extend those solutions to leverage the Aspera Transfer Service (ATS) in the cloud via a simple, easy to use REST APIs of Aspera Node. There are many benefits of embedding ATS into existing SaaS applications to support the transfer of larger files and data sets to and from cloud storage. Those benefits include high speed transfers, reliability and predictable transfer times, secure authentication, authorization and data encryption and manageability all available via a multi tenant, multi region, multi cloud transfer service.

Licensing and purchasing

ATS is offered via various pay per transfer volume license options. ATS is offered via Pay-as-you-go (PAYGO) with zero initial commitment and annual large volume pre-commit discounts. The PAYGO pricing is calculated and charged on a monthly basis and includes an automatic discount schedule, so the unit price decreases as your volume increases. Subscribers who want to benefit from bigger discounts, ATS offers annual pre-commitment options that scale up to multi petabytes per year. Both PAYGO and annual commitment options are available directly from Aspera sellers, or via digital marketplaces such as the Aspera Store.

Cloud storage

Aspera Transfer Service (ATS) subscribers benefit from the Direct to Cloud Storage capabilities of ATS. The Direct to Cloud Storage capabilities of ATS enable subscribers to leverage the benefits of various cloud storage platforms directly from most Aspera application. ATS subscribers are able to connect the transfer service to their cloud storage via the various subscription management interfaces. Once ATS is connected to cloud storage, all Aspera client and web applications can leverage the transfer service (and therefore cloud storage) natively. This key feature, enables organizations to deploy Aspera in a hybrid model (Combination of cloud and on premises) and to leverage the cloud for applications and use cases where it makes most sense, without re-architecting the entire Aspera deployment. The following advanced cloud storage features are supported: AWS - S3, Infrequent Access, Reduced Redundancy, KMS (Server side key), Azure Cloud storage, Cool Storage.

Security - Identity and access

Aspera Transfer Service (ATS) provides access to the service via a secure Access Key and Secret. Access keys are the core identity for users to interact with ATS and is created and managed by the ATS subscriber. The ATS Access key is used to authorize transfers, initiate transfers, and make API calls to the service related to the transfers. ATS is connected to cloud storage via the native cloud storage identity system, such as AWS Access Keys, AWS IAM roles, Bluemix S3 keys, Azure account key and SAS URL, Google Project ID, email ID and private key.

Security - content encryption

Data and files transferred with the Aspera Transfer Service (ATS) can be encrypted in transit using the included 128 bit AES encryption. Additionally, all files can be encrypted at rest using the included Encryption at Rest feature of ATS. (NOTE: More details of EAR here)


  • Speed - Single stream transfers at maximum speed independent of network round-trip delay and packet loss (500ms / 30%+ packet loss), up to the I/O limits of the platform, 10-100X faster than TCP transfers, with support for all Cloud infrastructure regions and data centers.
  • Predictability - Unlike TCP-based transfers which are highly variable, FASP transfer times are highly predictable, and scale linearly with increases in bandwidth.
  • Scale Out - Aggregate speeds scale without limit, e.g. 100 Gigabits/second per cluster.
  • Concurrency - Concurrent transfer support with extreme scaling to many thousands of sessions per cluster.


Native integration with cloud storage APIs ensures data is written directly to the object storage during the transfer and immediately available when transfer completes.


  • Largest File Sizes - Support for single transfer session of files and directory sizes up to the largest object size supported by the particular cloud platform.
  • Largest Directories - Transfers directories containing any number of individual files at high speed, even for very large numbers of very small files (100 Mbps transfers over WAN for file sets of 1-10KB in size).


Network and disk based congestion control providing automatic adaptation of transmission speed to available network bandwidth and available I/O throughput to/from storage platform, to avoid congestion and overdrive.


  • Encryption - Built-in over the wire encryption In transit and encryption-at-rest with client and server side controlled options
  • Integrity Verification - Data integrity verification for each transmitted block
  • Automatic Resume - Automatic retry and checkpoint resume (single files and directories) from point of interruption on failure.
  • Authentication and Access Control - Built in support for authenticated Aspera storage roots private to the tenant. Support for configurable read, write, and listing access per user account. Support for platform-specific role based access control including Amazon IAMS and Microsoft Secure SaaS URLs.


Fully interoperable transfer support with all core Aspera products acting as transfer peers with the cloud storage, including Enterprise Server, Connect Server, Connect browser plug-in, Desktop client & Point-to-point (command line, watch folder, and interactive GUI), Drive, Cargo, Mobile, Outlook Plug-in.


Fully interoperable transfer support for all modes of transfer in these products including command line (CLI), interactive GUI point-and-click, browser, hot folder automation, SDK automation, and synchronization.


Full support for all Aspera server-side features such as:

  • Secure storage roots - Configurable by tenant, bucket and user
  • Console reporting - Real-time and historical
  • Comprehensive file handlingpolicies, such as preservation of creation and modification times
  • Seamless, full featured HTTP fallback - In restricted network environments with full support for encryption in transit, encryption-at-rest and automatic retry and resume.
  • Secure forward/reverse proxy support - Transfers to/from cloud environments support Aspera proxy on the client side in forward or reverse mode.


The server side software supports transfer initiation and management via the core SDKs. Transfers can be initiated to/from the service using the Connect JavaScript API, faspmanager, REST and SOAP web services, and the ascp and async command line. The latest RESTful Aspera Node APIs also support transfer initiation between clusters and from clusters outbound to other Aspera endpoints, allow applications to query the cluster for transfer status and historical progress reporting


ATS is a fully managed service hosted by Aspera in the cloud and provides subscribers with a high performance, secure, reliable, FASP based, multi tenant, auto-scaleable transfer platform as a service. ATS is built upon the Aspera transfer platform and includes the following components: FASP enabled transfer servers with direct to cloud object storage, Aspera desktop client, Aspera embedded client, Aspera Usage portal, and the ATS management portal. Please note that this service, unlike the Aspera Files service, does not include cloud object storage, so all customers must separately provide and pay for that.

Service availability (clouds and region)

ATS is generally available in the following regions for Amazon Web Services (US, EU, APAC), IBM Cloud (US, EU, APAC), Microsoft Azure (US, EU, APAC), and Google Cloud Services (US beta). Detailed availability can be reviewed here.


Expansion in EUROPE & ASIA

The service footprint has been expanded to include new deployments to the IBM Cloud infrastructure in Amsterdam, Milan & Frankfurt.  The service also now supports Amazon Web Services regions in Frankfurt & Singapore. See a list of all deployments here.

Support for the Microsoft Azure Cloud platform

New support for the Microsoft Azure Cloud includes service deployment to US Central, US East & Singapore regions, as well as support for the Azure Files storage type.


New ability to grant role-based access to an ATS node.

Enhanced Networking for Clusters

Cluster node AWS images are now enabled with enhanced networking using an elastic network adapter (ENA).

Use Cases


Performance calculator

“Aspera offers a mature, fast, reliable and secure solution capable of handling the high volume of video content we need to deliver directly to cloud storage."  Simon Christie Broadcast Systems Engineer, Distribution & Broadcast Technology, Channel 4