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Hi Diana! That's a great question. 🙂 A site reliability engineer is a software developer with IT operations experience - someone who knows how to code, and who also understands how to work in a large-scale IT environment.
So, to start, you'd need a general Computer Science degree or certificate. Then, some knowledge of IT Infrastructure, software development, DevOps, automation, maintenance, system administration etc.
There are also specific courses for the SRE job role, offered by different organizations.
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Hi Julian, thanks for reaching out! So, this is quite a broad question. In brief, where BPM (Business Process Management) is a strategic approach to develop, run, continuously optimize and manage any type of business processes that might span even through different organizations and engage several different user roles, RPA is more tactical solution to automate manual tasks that business users normally do in their own desktop environment using different applications and their user interfaces - like reporting, gathering data from different sources, handling and matching invoices, just to mention few of them. Of course it is not always so black and white, but that’s the main difference. Hope this helps and thanks again for the question!
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Hey, David!
A CDN allows for the quick transfer of assets needed for loading Internet content including HTML pages, javascript files, stylesheets, images, and videos. The popularity of CDN services continues to grow, and today the majority of web traffic is served through CDNs, including traffic from major sites.
A properly configured CDN may also help protect websites against some common malicious attacks, such as Distributed Denial of Service (DDOS) attacks (https://ibm.co/3c34BLL).
Is a CDN the same as a web host?
While a CDN does not host content and can’t replace the need for proper web hosting, it does help cache (https://ibm.co/2YuXh7w) content at the network edge (https://ibm.co/3difA4i), which improves website performance (https://ibm.co/3fij0Ww). Many websites struggle to have their performance needs met by traditional hosting services, which is why they opt for CDNs.
By utilizing caching to reduce hosting bandwidth, helping to prevent interruptions in service (https://ibm.co/35uY9dT), and improving security (https://ibm.co/2z7Y9V4), CDNs are a popular choice to relieve some of the major pain points that come with traditional web hosting.
What are the benefits of using a CDN?
Although the benefits of using a CDN vary depending on the size and needs of an Internet property, the primary benefits for most users can be broken down into 4 different components:
Improving website load times - By distributing content closer to website visitors by using a nearby CDN server (among other optimizations), visitors experience faster page loading times. As visitors are more inclined to click away from a slow-loading site, a CDN can reduce bounce rates and increase the amount of time that people spend on the site. In other words, a faster a website means more visitors will stay and stick around longer.
Reducing bandwidth costs - Bandwidth consumption costs for website hosting is a primary expense for websites. Through caching and other optimizations, CDNs are able to reduce the amount of data an origin server must provide, thus reducing hosting costs for website owners.
Increasing content availability and redundancy - Large amounts of traffic or hardware failures can interrupt normal website function. Thanks to their distributed nature, a CDN can handle more traffic and withstand hardware failure better than many origin servers.
Improving website security - A CDN may improve security by providing DDoS mitigation (https://ibm.co/2Wsvult), improvements to security certificates, and other optimizations.
How does a CDN work?
At its core, a CDN is a network of servers linked together with the goal of delivering content as quickly, cheaply, reliably, and securely as possible. In order to improve speed and connectivity, a CDN will place servers at the exchange points between different networks.
These Internet exchange points (IXPs) (https://ibm.co/2YsmZtw) are the primary locations where different Internet providers connect in order to provide each other access to traffic originating on their different networks. By having a connection to these high speed and highly interconnected locations, a CDN provider is able to reduce costs and transit times in high speed data delivery.
BTW, free service is going away soon.
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Hi, thank you for your question! While both are cloud technologies offered by RedHat, OpenStack is IaaS (Infrastructure as a service) and OpenShift is PaaS (Platform as a service).
PaaS (e.g. OpenShift) allows the cloud providers to transform their servers into cloud, by hosting networks, storage, operating system software, middleware, databases, etc. at their data centers. Also, PaaS is often built around containers, a virtualized compute model one step removed from virtual servers. PaaS is a newer model of cloud computing.
IaaS (e.g. OpenStack) provides on-demand access to fundamental computing resources (physical and virtual servers, networking, and storage) over the internet, on a pay-as-you-go basis. Users are able to scale and shrink resources on an as-needed basis. Also, IaaS does not use containers. In contrast to PaaS, IaaS provides the users with the lowest-level control of computing resources in the cloud.
You can read more in this blog by RedHat 👉 https://ibm.co/3jH6CD8
Hope this helps! 🙂
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Hi Hamza, thank you for the question! To name a few, besides Java™, there's also C++, VB .NET, and other .NET languages, COBOL, Fortran, PHP, Python, REXX, or Ruby.
You can access some resources about database programming here: https://ibm.co/3ez92kK
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