Multi-tier Architecture is also known as n-tier architecture. In this, an application is developed and distributed in more than one layer. The number of layers depend on business requirements but three tier architecture is a preferred choice and most commonly used. In the current Era Where Cyber-attacks are common every business must have a strong Backup and disaster recovery system to save their data.

This three-tier architecture consists of the Presentation tier, the Logic tier and the Data tier.

Server-less Architecture

A server-less architecture is a great way to build and run services and applications without having to manage infrastructure. You no longer have to scale and maintain servers to run your applications, databases, and storage systems.

By using a server-less architecture, you can focus on your product instead of worrying about managing and operating servers or runtimes, either in the cloud or on-premises.

The Presentation Tier

Presentation tier is like an interface. Users directly communicate with it. Using AWS, amazon API gateway opens up a variety of presentation tier possibilities. An Internet-accessible HTTPS API can be used by any client capable of a HTTPS communication.

The Logic Tier

The logic tier represents the brain of the application. It contains the code that translates the user’s actions to the application’s behavior. This is why adopting an Amazon API Gateway and AWS Lambda to form your logic tier can be verybeneficial. These two services allow you to build a server-less application that is highly scalable and secure. Your application could use thousands of servers, however by leveraging this pattern you do not have to worry about managing even a single one.

The Data Tier

The data tier consists of storage that holds the data relevant to the application. By using AWS Lambda in your logic tier, you can enjoy a vast number of storage options for your data tier. You can either store your data to AmazonDB or AWS Aurora.

Amazon DynamoDB has the capability of storing infinitely scalable NoSQL database and also provides both provisioned and on-demand capacity modes so that costs can be optimized by specifying capacity per workload.

AWS Aurora is a fully managed relational database service built for traditional enterprise database which needs performance and availability with the cost effectiveness of open source databases. It has the ability to automatically start up, shut down and scale capacity up or down based on application’s needs. It’s a cost effective solution for infrequent or unpredictable workloads.

Benefits

  • No Operating Systems to choose, patch or manage
  • No servers to monitor, scale out or secure
  • No risk to Infrastructure cost by over-provisioning
  • No risk to application performance by under-provisioning

Conclusion

The multi-tier architecture pattern encourages the best practice of creating application components that are easy to maintain, scalable and are cost efficient. It allows you to take advantage of managing services instead of managing a whole server-based infrastructure. Cloud backup solutions are necessary for business to survive.