How Fannie Mae constructed an information mesh structure to allow self-service utilizing Amazon Redshift knowledge sharing


This submit is co-written by Kiran Ramineni and Basava Hubli, from Fannie Mae.

Amazon Redshift knowledge sharing allows immediate, granular, and quick knowledge entry throughout Amazon Redshift clusters with out the necessity to copy or transfer knowledge round. Knowledge sharing offers dwell entry to knowledge in order that customers all the time see probably the most up-to-date and transactionally constant views of information throughout all shoppers as knowledge is up to date within the producer. You may share dwell knowledge securely with Amazon Redshift clusters in the identical or totally different AWS accounts, and throughout Areas. Knowledge sharing allows safe and ruled collaboration inside and throughout organizations in addition to exterior events.

On this submit, we see how Fannie Mae applied an information mesh structure utilizing Amazon Redshift cross-account knowledge sharing to interrupt down the silos in knowledge warehouses throughout enterprise models.

About Fannie Mae

Chartered by U.S. Congress in 1938, Fannie Mae advances equitable and sustainable entry to homeownership and high quality, inexpensive rental housing for thousands and thousands of individuals throughout America. Fannie Mae allows the 30-year fixed-rate mortgage and drives accountable innovation to make homebuying and renting simpler, fairer, and extra accessible. We’re targeted on rising operational agility and effectivity, accelerating the digital transformation of the corporate to ship extra worth and dependable, fashionable platforms in help of the broader housing finance system.


To meet the mission of facilitating equitable and sustainable entry to homeownership and high quality, inexpensive rental housing throughout America, Fannie Mae embraced a contemporary cloud-based structure which leverages knowledge to drive actionable insights and enterprise choices. As a part of the modernization technique, we launched into a journey emigrate our legacy on-premises workloads to AWS cloud together with managed providers resembling Amazon Redshift and Amazon S3. The fashionable knowledge platform on AWS cloud serves because the central knowledge retailer for analytics, analysis, and knowledge science. As well as, this platform additionally serves for governance, regulatory and monetary experiences.

To deal with capability, scalability and elasticity wants of a giant knowledge footprint of over 4PB, we decentralized and delegated possession of the information shops and related administration features to their respective enterprise models. To allow decentralization, and environment friendly knowledge entry and administration, we adopted an information mesh structure.

Knowledge mesh answer structure

To allow a seamless entry to knowledge throughout accounts and enterprise models, we checked out varied choices to construct an structure that’s sustainable and scalable. The information mesh structure allowed us to maintain knowledge of the respective enterprise models in their very own accounts, however but allow a seamless entry throughout the enterprise unit accounts in a safe method.  We reorganized the AWS account construction to have separate accounts for every of the enterprise models whereby, enterprise knowledge and dependent purposes had been collocated of their respective AWS Accounts.

With this decentralized mannequin, the enterprise models independently handle the accountability of hydration, curation and safety of their knowledge.  Nonetheless, there’s a vital have to allow seamless and environment friendly entry to knowledge throughout enterprise models and a capability to control the information utilization. Amazon Redshift cross-account knowledge sharing meets this want and allows us with enterprise continuity.

To facilitate the self-serve functionality on the information mesh, we constructed an internet portal that enables for knowledge discovery and talent to subscribe to knowledge within the Amazon Redshift knowledge warehouse and Amazon Easy Storage Service (Amazon S3) knowledge lake (lake home). As soon as a shopper initiates a request on the internet portal, an approval workflow is triggered with notification to the governance and enterprise knowledge proprietor. Upon profitable completion of the request workflow, an automation course of is triggered to grant entry to the buyer, and a notification is shipped to the buyer. Subsequently, the buyer is ready to entry the requested datasets. The workflow strategy of request, approval, and subsequent provisioning of entry was automated utilizing APIs and AWS Command Line Interface (AWS CLI) instructions, and whole course of is designed to finish inside a couple of minutes.

With this new structure utilizing Amazon Redshift cross-account knowledge sharing, we had been in a position implement and profit from the next key rules of an information mesh structure that match very properly for our use case:

  • An information as a product strategy
  • A federated mannequin of information possession
  • The power for shoppers to subscribe utilizing self-service knowledge entry
  • Federated knowledge governance with the power to grant and revoke entry

The next structure diagram reveals the high-level knowledge mesh structure we applied at Fannie Mae. Knowledge from every of the operational programs is collected and saved in particular person lake homes and subscriptions are managed by way of an information mesh catalog in a centralized management airplane account.

Fig 1. High level Data Mesh catalog architecture

Fig 1. Excessive stage Knowledge Mesh catalog structure

Management airplane for knowledge mesh

With a redesigned account construction, knowledge are unfold out throughout separate accounts for every enterprise utility space in S3 knowledge lake or in Amazon Redshift cluster. We designed a hub and spoke point-to-point knowledge distribution scheme with a centralized semantic search to reinforce the information relevance. We use a centralized management airplane account to retailer the catalog info, contract element, approval workflow insurance policies, and entry administration particulars for the information mesh. With a coverage pushed entry paradigm, we allow fine-grained entry administration to the information, the place we automated Knowledge as a Service enablement with an optimized strategy. It has three modules to retailer and handle catalog, contracts, and entry administration.

Knowledge catalog

The information catalog offers the information glossary and catalog info, and helps absolutely fulfill governance and safety requirements. With AWS Glue crawlers, we create the catalog for the lake home in a centralized management airplane account, after which we automate the sharing course of in a safe method. This permits a query-based framework to pinpoint the precise location of the information. The information catalog collects the runtime details about the datasets for indexing functions, and offers runtime metrics for analytics on dataset utilization and entry patterns. The catalog additionally offers a mechanism to replace the catalog by way of automation as new datasets turn out to be out there.

Contract registry

The contract registry hosts the coverage engine, and makes use of Amazon DynamoDB to retailer the registry insurance policies. This has the small print on entitlements to bodily mapping of information, and workflows for the entry administration course of. We additionally use this to retailer and preserve the registry of current knowledge contracts and allow audit functionality to find out and monitor the entry patterns. As well as, the contract registry serves as the shop for state administration performance.

Entry administration automation

Controlling and managing entry to the dataset is completed by way of entry administration. This offers a just-in-time knowledge entry by way of IAM session insurance policies utilizing a persona-driven strategy. The entry administration module additionally hosts occasion notification for knowledge, resembling frequency of entry or variety of reads, and we then harness this info for knowledge entry lifecycle administration. This module performs a vital function within the state administration and offers in depth logging and monitoring capabilities on the state of the information.

Course of movement of information mesh utilizing Amazon Redshift cross-account knowledge sharing

The method movement begins with making a catalog of all datasets out there within the management airplane account. Shoppers can request entry to the information by way of an internet front-end catalog, and the approval course of is triggered by way of the central management airplane account. The next structure diagram represents the high-level implementation of Amazon Redshift knowledge sharing through the information mesh structure. The steps of the method movement are as follows:

  1. All the information merchandise, Amazon Redshift tables, and S3 buckets are registered in a centralized AWS Glue Knowledge Catalog.
  2. Knowledge scientists and LOB customers can browse the Knowledge Catalog to search out the information merchandise out there throughout all lake homes in Fannie Mae.
  3. Enterprise purposes can devour the information in different lake homes by registering a shopper contract. For instance, LOB1-Lakehouse can register the contract to make the most of knowledge from LOB3-Lakehouse.
  4. The contract is reviewed and authorised by the information producer, which subsequently triggers a technical occasion through Amazon Easy Service Notification (Amazon SNS).
  5. The subscribing AWS Lambda perform runs AWS CLI instructions, ACLs, and IAM insurance policies to arrange Amazon Redshift knowledge sharing and make knowledge out there for shoppers.
  6. Shoppers can entry the subscribed Amazon Redshift cluster knowledge utilizing their very own cluster.
Fig 2. Data Mesh architecture using Amazon Redshift data sharing

Fig 2. Knowledge Mesh structure utilizing Amazon Redshift knowledge sharing

The intention of this submit is to not present detailed steps for each facet of making the information mesh, however to supply a high-level overview of the structure applied, and the way you should use varied analytics providers and third-party instruments to create a scalable knowledge mesh with Amazon Redshift and Amazon S3. If you wish to check out creating this structure, you should use these steps and automate the method utilizing your software of alternative for the front-end person interface to allow customers to subscribe to the dataset.

The steps we describe listed below are a simplified model of the particular implementation, so it doesn’t contain all of the instruments and accounts. To arrange this scaled-down knowledge mesh structure, we reveal utilizing cross-account knowledge sharing utilizing one management airplane account and two shopper accounts. For this, it is best to have the next conditions:

  • Three AWS accounts, one for the producer <ProducerAWSAccount1>, and two shopper accounts: <ConsumerAWSAccount1> and <ConsumerAWSAccount2>
  • AWS permissions to provision Amazon Redshift and create an IAM function and coverage
  • The required Amazon Redshift clusters: one for the producer within the producer AWS account, a cluster in ConsumerCluster1, and optionally a cluster in ConsumerCluster2
  • Two customers within the producer account, and two customers in shopper account 1:
    • ProducerClusterAdmin – The Amazon Redshift person with admin entry on the producer cluster
    • ProducerCloudAdmin – The IAM person or function with rights to run authorize-data-share and deauthorize-data-share AWS CLI instructions within the producer account
    • Consumer1ClusterAdmin – The Amazon Redshift person with admin entry on the buyer cluster
    • Consumer1CloudAdmin – The IAM person or function with rights to run associate-data-share-consumer and disassociate-data-share-consumer AWS CLI instructions within the shopper account

Implement the answer

On the Amazon Redshift console, log in to the producer cluster and run the next statements utilizing the question editor:



For sharing knowledge throughout AWS accounts, you should use the next GRANT USAGE command. For authorizing the information share, usually it is going to be executed by a supervisor or approver. On this case, we present how one can automate this course of utilizing the AWS CLI command authorize-data-share.


aws redshift authorize-data-share --data-share-arn <DATASHARE ARN> --consumer-identifier <CONSUMER ACCOUNT>

For the buyer to entry the shared knowledge from producer, an administrator on the buyer account must affiliate the information share with a number of clusters. This may be executed utilizing the Amazon Redshift console or AWS CLI instructions. We offer the next AWS CLI command as a result of that is how one can automate the method from the central management airplane account:

aws redshift associate-data-share-consumer --no-associate-entire-account --data-share-arn <DATASHARE ARN> --consumer-arn <CONSUMER CLUSTER ARN>

/* Create Database in Shopper Account */


GRANT USAGE ON DATABASE ds_db TO person/group;

/* Non-obligatory:Grant utilization on database to customers or teams */
GRANT USAGE ON SCHEMA Schema_from_datashare TO GROUP Analyst_group;

To allow Amazon Redshift Spectrum cross-account entry to AWS Glue and Amazon S3, and the IAM roles required, confer with How can I create Amazon Redshift Spectrum cross-account entry to AWS Glue and Amazon S3.


Amazon Redshift knowledge sharing offers a easy, seamless, and safe platform for sharing knowledge in a domain-oriented distributed knowledge mesh structure. Fannie Mae deployed the Amazon Redshift knowledge sharing functionality throughout the information lake and knowledge mesh platforms, which at the moment hosts over 4 petabytes value of enterprise knowledge. The aptitude has been seamlessly built-in with their Simply-In-Time (JIT) knowledge provisioning framework enabling a single-click, persona-driven entry to knowledge. Additional, Amazon Redshift knowledge sharing coupled with Fannie Mae’s centralized, policy-driven knowledge governance framework tremendously simplified entry to knowledge within the lake ecosystem whereas absolutely conforming to the stringent knowledge governance insurance policies and requirements. This demonstrates that Amazon Redshift customers can create knowledge share as product to distribute throughout many knowledge domains.

In abstract, Fannie Mae was in a position to efficiently combine the information sharing functionality of their knowledge ecosystem to carry efficiencies in knowledge democratization and introduce a better velocity, close to real-time entry to knowledge throughout varied enterprise models. We encourage you to discover the information sharing function of Amazon Redshift to construct your individual knowledge mesh structure and enhance entry to knowledge for your corporation customers.

Concerning the authors

Kiran Ramineni is Fannie Mae’s Vice President Head of Single Household, Cloud, Knowledge, ML/AI & Infrastructure Structure, reporting to the CTO and Chief Architect. Kiran and group spear headed cloud scalable Enterprise Knowledge Mesh (Knowledge Lake) with help for Simply-In-Time (JIT), and Zero Belief because it applies to Citizen Knowledge Scientist and Citizen Knowledge Engineers. Prior to now Kiran constructed/lead a number of web scalable always-on platforms.

Basava Hubli is a Director & Lead Knowledge/ML Architect at Enterprise Structure. He oversees the Technique and Structure of Enterprise Knowledge, Analytics and Knowledge Science platforms at Fannie Mae. His major focus is on Structure Oversight and Supply of Revolutionary technical capabilities that remedy for vital Enterprise enterprise wants. He leads a passionate and motivated group of architects who’re driving the modernization and adoption of the Knowledge, Analytics and ML platforms on Cloud. Underneath his management, Enterprise Structure has efficiently deployed a number of scalable, revolutionary platforms & capabilities that features, a fully-governed Knowledge Mesh which hosts peta-byte scale enterprise knowledge and a persona-driven, zero-trust based mostly knowledge entry administration framework which solves for the group’s knowledge democratization wants.

Rajesh Francis is a Senior Analytics Buyer Expertise Specialist at AWS. He makes a speciality of Amazon Redshift and focuses on serving to to drive AWS market and technical technique for knowledge warehousing and analytics. Rajesh works intently with giant strategic clients to assist them undertake our new providers and options, develop long-term partnerships, and feed buyer necessities again to our product growth groups to information the path of our product choices.

Kiran Sharma is a Senior Knowledge Architect in AWS Skilled Providers. Kiran helps clients architecting, implementing and optimizing peta-byte scale Huge Knowledge Options on AWS.


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