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Assessment Test You notice in the AWS Management Console that Your Amazon Elastic Compute Cloud (Amazon EC2) Instance State is Failed. What would cause this? Loss of…

Understand highly available architectures. A system is highly available when it can withstand the failure of an individual or multiple components. If you design architectures around the…

Understand the shared responsibility model. The shared responsibility model is not just limited security considerations; it also extends to IT controls. For example, the management, Operation, and…

Understand the shared responsibility model. AWS is responsible for securing the underlying infrastructure that supports the cloud, and you’re responsible for anything you put on the cloud…

Know the basic use cases for Amazon CloudFront. Know when to use Amazon CloudFront (for popular static and dynamic content with geographically distributed users) and when not…

Know how to use Amazon ElastiCache.Improve the performance of your application by deploying Amazon ElastiCache cluster as part of your application and offloading read requests for frequently…

Understand what DNS is.DNS is the methodology that computers use to convert human-friendly domain names (for example, amazon.com) into IP addresses (such as 192 .0.2.1). Know how…

Know how to use Amazon SQS.Amazon SQS is unique service designed by Amazon to help you to decouple your infrastructure. Using Amazon SQS, you can store messages…

Know what a relational database is.A relational database consists of one or more tables, Communication to and from relational databases usually involves simple SQL queries, such as…

Know the different principals in IAM.The three principals that can authenticate and interact with AWS resources are the root user, IAM users, and roles. The root user…

Understand what a VPC is and its core and optional components.An Amazon VPC is a logically isolated network in the AWS Cloud. An Amazon VPC is made…

Understand what the Elastic Load Balancing service provides.Elastic Load Balancing is a highly available service that distribute traffic across Amazon EC2 instances and includes options that provide…

Know the basics of launching an Amazon EC2 instance.To launch an instance, you must specify an, AMI, which defines the software on the instance at launch, and…

Know what Amazon S3 is and what it is commonly used for.Amazon S3 is secure, durable, and highly scalable cloud storage that can be used to store…

Understand the global infrastructure.AWS provides a highly available technology infrastructure platform with multiple locations worldwide. These locations are composed of regions and Availability Zones. Each region is…

What is Configuration Management? List a few available configuration management tools. What is Ansible? List some of major advantages of using Ansible. Write down the data flow…

Before going further deep into Ansible, it is time to get familiar with some important Ansible commands: ansible: It is an extra – simple root / framework…

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

Continuous Integration is not an all-or-nothing affair. In fact, introducing CI into an organization takes you on a path that progresses through several distinct phases. Each of…

There should be one person assigned to Continuous Approval process which can do the tasks to control over the milestone and scope of software development and link…

Code coverage is a measure of how much code is executed during testing & Test coverage is a measure of how many test cases have been executed…

Continuous testing as a practice is actually what you do when you’re doing test-driven development properly. It provides tool support for automatically detecting when you save a…

This is NOT a Continuous Deployment which is normally happening in production server. Here I am trying to depict the environment where we need to automate the…

Application packages are a program or group of programs that is designed for the end user. Application packages make application installation/uninstall process to Modular approach, Encapsulation/hiding of…

Continuous Inspection is a process to detect the possible bugs in the source code which may occur due to bad code quality and lack of effective peer…

Unit testing is a relatively old practice and what has become the definition of a good unit test through decades of practice is the following: It’s automated…

The benefit is that you know – immediately – when someone has broken the build. This means either They committed code that prevents compilation, which would screw…

Software engineers must continuously learn and integrate. Software engineers must continuously learn and integrate. You learn more and more about what works and what doesn’t. If you’re…

Continuous Integration is a Good Configuration Management Practice. Developing software requires planning for change, continuously observing the results, and incrementally course-correcting based on the results. This is…

Frequent delivery means being able to work efficiently in small batches. The role of a (continuous) integration specialist / test automation specialist is to enable the DevOps…