Exam Essentials Know the Route 53 console areas with a focus on hosted zones and routing records. Understand all of the traffic management options in Route 53 such as latency, multivalue, etc., and how they are used. Understand the concept of DNS zones and what information they contain. Know the difference between public and private […]

Detecting Incidents Even after you have put all the necessary measures in place to protect your infrastructure and your data, you are only halfway through ensuring security. Despite all the protections implemented, some incidents can still occur. It can be any type of incident—a security breach, a data leak, a system misconfiguration, a configuration change, […]

Word embedding Unlike traditional approaches, such as BoW and TD-IDF, modern methods of text representation will take care of the context of the information, as well as the presence or frequency of words. One very popular and powerful approach that follows this concept is known as word embedding. Word embeddings create a dense vector of […]

Multisite Active-Active Last but not least is the multisite active-active approach. In this scenario, there is more than one production site in more than one region. All of the production sites are able to receive traffic and respond to requests at any time and can be balanced to ensure that the application never experiences any […]

Resolver Endpoints Monitoring Data specific to the resolver endpoints is exported to and monitored by CloudWatch. The raw data is collected at 5-minute intervals; converted into readable, near real-time data; and displayed in dashboards and tables you create. You can use Amazon CloudWatch to monitor the number of DNS queries that are forwarded by Route […]

Summary In this chapter, you examined the AWS Config service in detail. You saw how to start the configuration recorder to begin inventorying the resources in our AWS account, and reviewed the different types of rules available for AWS Config and how the rules get triggered inside an account. You also learned how to use […]

Limiting Data Access and Visibility First, keep people away whenever it is feasible. End users should consume the data as much as possible through an interface of some sort, such as a custom user interface (UI), a custom API, or another AWS service UI or API. Allowing access to the data directly where it is […]

Bag of words The first one you will learn is known as bag of words (BoW). This is a very common and simple technique, applied to text data, that creates matrix representations to describe the number of words within the text. BoW consists of two main steps: creating a vocabulary and creating a representation of […]

CloudWatch Logging CloudWatch is the primary AWS monitoring application and is rather extensive in its capabilities and feature sets. In the following sections, the various options available in CloudWatch for Route 53 metrics are explained. DNS Query Logging Query logging will provide you with detailed information on resolver queries to Route 53, which includes the […]

Backup and Restore The simplest option is backup and restore. All stateful AWS services support some sort of backup. Backup and restore can be a great strategy when the RPO and RTO are long (typically hours) because the approach is very low cost and also very easy to implement. The cheapest backup and restore approach […]