Additional Considerations for Resiliency As a best practice, it is recommended to have at least two separate connections at two different DX locations. In this case, you end up with two DX connections. This will provide resiliency against connectivity failure due to a device failure, a network cable cut, or an entire location failure. To […]

AWS Load Balancer Offerings AWS offers three types of elastic load balancers with each designed for a specific use case. In this section we will learn about these AWS service offerings, what they do, how they are different, and which load balancer in the family is the best fit for a given requirement. Tables 1.1 […]

Metering Metering is a process of extracting information from a platform and storing it for processing. In the scope of this chapter, the information would be operational metrics of the system or platform where the application resides—for example, capturing how many units of CPU, network, and disk capacity are used. On top of the system […]

Checking the Health of a Specific Endpoint In this case, you would create a check from Route 53 that conducts checks at regular intervals specified by you. Your health checks monitor an endpoint that is either an IP address or a domain name. Route 53 then checks at specified intervals if the server, application, or […]

Exam Readiness Drill – Chapter Review Questions Apart from a solid understanding of key concepts, being able to think quickly under time pressure is a skill that will help you ace your certification exam. That is why working on these skills early on in your learning journey is key. Chapter review questions are designed to […]

Various Flavors of AWS DX You can use AWS DX provided that one of the following applies: There exist three types of DX connections. That said, only the first two types listed in the following section are recommended when you require a consistent connection capacity, which is eventually the main reason to set up a […]

Proxy Connections Proxy protocol connections are used by the classic load balancer to inject source and destination IP addresses and port numbers into the connection request by the load balancer before sending it to the target server. Both TCP and SSL/TLS support is standard. Many applications require this data to not be modified by the […]

This chapter covers the following official AWS Certified SysOps Administrator – Associate (SOA-C02) exam domains: Domain 1: Monitoring, Logging, and Remediation Domain 4: Security and Compliance (For more information on the official AWS Certified SysOps Administrator – Associate [SOA-C02] exam topics, see the Introduction.) Having a good understanding of what your system is doing in […]

AWS VPN CloudHub AWS VPN CloudHub is a hub-and-spoke VPN solution to securely connect multiple branch offices together and a VPC on AWS. It leverages the AWS Managed VPN service, but instead of creating CGWs for a single on-premises location, you create as many CGWs as you have remote branches/offices that need a VPN connection […]

ML in the cloud ML has gone to the cloud and developers can now use it as a service. AWS has implemented ML services at different levels of abstraction. ML application services, for example, aim to offer out-of-the-box solutions for specific problem domains. AWS Lex is a very clear example of an ML application as […]