Benefits of Managed Services To varying degrees, you can call upon managed services when you develop solutions in the AWS Cloud. For example, you can use EC2 to help with the automation and deployment of your virtual machines, and you can go even further and use a serverless compute service like Lambda in order to…
Other Benefits – CLF-C02 Exam Guide
Other Benefits As you know, there are plenty of benefits when you move to the AWS Cloud, and these benefits certainly impact the economic benefits that we have discussed so far. Let’s now investigate the benefits of AWS automation and the benefits of using managed services inside of AWS. While these benefits may seem out…
IPv4 and Network Segmentation Summary
The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (9.4.1) • IPv4 Unicast, Broadcast, and Multicast—Unicast transmission refers to one device sending a message to one other device in one-to-one communications. A unicast packet has a destination IP address that…
Costs Associated with On-Premises Environments
Costs Associated with On-Premises Environments Even if you are not working in the finance department of your organization, you might be curious about the costs that your company typically faces when operating its IT infrastructure in an on-premises environment. Here are some costs associated with on-premises environments that might not be found in a public…
Broadcast Domains and Segmentation
Have you ever received an email that was addressed to every person at your work or school? This was a broadcast email. Hopefully, it contained information that each of you needed to know. But often a broadcast is not really pertinent to everyone in the mailing list. Sometimes, only a segment of the population needs…
Cloud Economics – CLF-C02 Exam Guide
Cloud Economics One of the biggest factors driving the move to public cloud technologies like AWS is economics. Organizations become aware of several major factors that make a cloud move almost inevitable. In this part of the chapter, we break them down to ensure that you fully understand them, even if finance is not your…
Database Migration Service
Database Migration Service One of the many areas where AWS shines is in managed database services. For example, with AWS Relational Database Services (RDS), customers can rely on AWS to do the hard work of managing underlying servers for the hosting of massive customer databases. Is it any surprise that AWS also offers a fully…
Legacy Classful Addressing – 100-150 Exam Guide
In 1981, IPv4 addresses were assigned using classful addressing as defined in RFC 790 (https://tools.ietf.org/html/rfc790), Assigned Numbers. Customers were allocated a network address based on one of three classes, A, B, or C. The RFC divided the unicast ranges into specific classes as follows: • Class A (0.0.0.0/8 to 127.0.0.0/8) — Designed to support extremely…
Cloud Transformation Journey
Cloud Transformation Journey Migrating to the cloud can be a very complex set of tasks for an organization, and so the AWS Cloud Adoption Framework provides us with another valuable tool. It suggests a cloud transformation journey that consists of four phases, as shown in Figure 4-2. Figure 4-2 The Cloud Transformation Journey These phases…
Routing to the Internet – 100-150 Exam Guide
Most internal networks, from large enterprises to home networks, use private IPv4 addresses for addressing all internal devices (intranet) including hosts and routers. However, private addresses are not globally routable. In Figure 9-4, customer networks 1, 2, and 3 are sending packets outside their internal networks. These packets have a source IPv4 address that is…