Public cloud - Private cloud - Hybrid cloud: Which one to choose?

Public cloud - Private cloud - Hybrid cloud: Which one to choose? Below we outline some basic considerations and cloud comparisons, as well as best practices for how to integrate and manage these complex deployments.

Public cloud

By now, most organisatons understand the cost benefits of an IaaS provider like Amazon Web Services, including a low and predictable cost of ownership and a shift from a capital expenditure to an operating expenditure. This makes it possible to significantly reduce an organisaton’s upfront costs, its ongoing costs of IT labor and potentially its tax liability.

The technical benefits are equally attractive: scalability, automated deployments, and greater reliability, to name a few. There are also very few technical limitations that would prevent an organisaton from moving their infrastructure to AWS; almost every function a traditional resource supports in the private cloud or in a data centre could be replicated in AWS.

These application tiers are especially well suited to the public cloud:

Long-term storage, including tape storage, which has significantly more cost-effective solutions in AWS (Glacier and Storage Gateway’s Virtual Tape Library)
Data storage of any kind, especially if you are currently hosting physical media that fails often or needs to be replaced (S3 is an infinitely expandable, low-cost storage resource)
The web tier of an application that is bursty or highly seasonal (EC2, Auto Scaling, ELBs)
The web tier of an application that is mission-critical or latency-intolerant (Custom Auto Scaling groups and automated deployments with Puppet scripts)
Any new application that demand is uncertain for, especially for microsites or other interactive properties for marketing and ad campaigns
Testing environments, due to the fact that it is so much easier to spin up and down instances for load testing.

Enterprises must then decide whether they want to manage their public cloud infrastructure themselves or outsource it to a managed cloud services provider. A managed cloud services provider can maintain the entire cloud infrastructure (web servers, application servers, load balancing, custom failover scripts) and some may also be able to integrate with on-premises or private cloud solutions to provide a single monitoring interface.

Note that compliance requirements no longer necessitate a private cloud solution rather than a public cloud solution. AWS has been on the leading edge of compliance in the cloud for several years, and while there is lingering skepticism, the adoption of AWS cloud by the largest and most complex healthcare and financial institutions is a indication of the degree to which AWS ensures compliance and security in the cloud. We presented at Amazon re:Invent on the architecture required for HIPAA-compliant deployments here.

Private cloud

Although there are many advantages to the public cloud, enterprises very rarely deploy 100% of their applications into the public cloud. Logistically, it is often much simpler to move from your on-premises environment to a private cloud than from on-premises to public cloud.

Private cloud environments can be configured to support any application, just as your data centre currently hosts it. Private cloud is an especially attractive option if certain features in legacy applications prevent some applications from operating well in the public cloud.

Here are some indicators that your application would be a good candidate for maintenance in a private cloud:

You are using Oracle RAC (shared storage) and require dedicated infrastructure for compliance. The shared storage equivalent in AWS, RDS, is not HIPAA-compliant.
You need high performance access to a file system, as in a media company that creates or produces large video files.
An application is poorly written and infrequently used, and therefore not worth the effort of migrating to the public cloud.
The application has very predictable usage patterns and low storage costs.
An application is unstable and heavily trafficked, but current IT staff is unfamiliar with the application. This may instead be a case for partial rewriting in the cloud.
The engineering team responsible for maintaining the application is not equipped for migrating the application in a cost-effective time frame. This may instead be a case for bringing on a managed cloud service provider.

A private cloud solution can be implemented in your on-premises data centre with a virtualisation layer such as VMware, though many mid-sized and large enterprises let a managed private cloud services provider maintain servers, storage, network, and application infrastructure.

Hybrid cloud

Ninety percent (90%) of enterprises say they are going to pursue a hybrid cloud solution this year. As explained above, enterprise architecture is often so complex that a hybrid cloud solution where public, private or on-premises infrastructure supports a single application is the best solution.

Hybrid architectures are especially attractive for large organisatons that want to explore the flexibility and scalability of the public cloud. An audit will not always reveal how an application will perform in the public cloud, so enterprises choose to test a single tier in the public cloud while maintaining key infrastructure on their private cloud or dedicated infrastructure.

A hybrid system is also a good solution if there is institutional hesitancy about the security of the public cloud for sensitive data (whether this is justified or not). Frankly, it is often easier to convince internal executive or IT teams to experiment with cloud solutions rather than adopt them wholesale. Maintaining veteran IT staff and legacy applications on legacy infrastructure while opening new lines of business in the cloud is a cost-effective solution that also manages institutional risk.

Finally, an important thing to understand about hybrid environments is that they are only as strong as the integrations that unite them. Performance monitoring, regular testing, and data ingress and egress procedures will reveal future areas of difficulty as well as signal when and how to further evolve the application. The team orchestrating the infrastructure is almost always more important than the specific type of cloud solution you chose.

Bài đăng phổ biến từ blog này

Greatest muscle cars of all time

Because it is a genre that enthusiasts are passionate about, you are bound to generate some criticism when compiling a list of the 7 greatest muscle cars of all time. However, we stuck its neck out to do just that. Some enthusiasts trace the history of muscle cars to the 1949 Oldsmobile Rocket 88. But the heyday of this genre ran from 1965 to 1970 before collapsing under the weight of higher gas prices, more stringent exhaust emissions regulations and soaring insurance costs. What is a muscle car? There isn't a settled definition, but most experts agree it's a smaller, 2-door car powered by a high-displacement engine typically found in a larger, full-size sedan. Some argue that pony cars, such as the Ford Mustang and Chevrolet Camaro, aren't muscle cars at all, but for this list, we chose not to make that distinction. Manufacturers engineered muscle cars for straight-line speed, inspiring more than an occasional Saturday night drag race between traffic lights. Neither built...

100 cụm động từ tiếng Anh phổ biến nhất kèm ví dụ minh họa

Trong quá trình học tiếng Anh, cụm động từ (phrasal verbs) là một trong những yếu tố ngữ pháp khiến nhiều người học cảm thấy khó khăn. Tuy nhiên, việc sử dụng thành thạo các cụm động từ không chỉ giúp bạn giao tiếp tự nhiên hơn mà còn thể hiện sự hiểu biết sâu sắc về ngôn ngữ này. Bài viết này sẽ giới thiệu 100 cụm động từ thông dụng trong tiếng Anh, giúp bạn nắm bắt được cách sử dụng chúng trong các tình huống giao tiếp hàng ngày. Hãy cùng khám phá và mở rộng vốn từ vựng của mình qua những cụm động từ này nhé! Add up - Cộng lại, tính tổng Ví dụ: The numbers don’t add up; there must be a mistake somewhere. Ask out - Mời ai đó đi chơi Ví dụ: He finally asked her out to dinner after months of hesitation. Back up - Hỗ trợ, sao lưu Ví dụ: Can you back me up during the meeting if I forget something? Blow up - Nổ tung, phóng đại Ví dụ: The balloon blew up when he filled it with too much air. Break down - Hỏng hóc, suy sụp Ví dụ: Our car broke down on the way to the airport...

5 Classic Muscle Cars That Are Still Cheap Today If You Can Find Them

A classic muscle car is the dream of young car enthusiasts to this day. For anyone in the market to purchase a new, vintage muscle car, options might seem somewhat limited. The divide between high-end options and the realities of the typical car-buying budget quickly comes into focus. This can be immensely frustrating for someone scoping out the market for an old classic that hasn't been in production for decades. While there's a huge resale space for a contemporary Honda Civics, and buyers are therefore able to be a little picky with their choice, finding a vintage muscle car that matches your specifics is a little tricky. Fortunately, the range of excellent models that remain out there for a discerning buyer is fairly wide open. Cheap options abound in the marketplace for those that are willing to be patient and put in the work to research and identify great examples. These are some classics that any buyer should keep their eye out for when looking to buy a fantastic vintage ...

1967 Chevrolet Camaro

The Chevrolet Camaro is an American automobile manufactured by Chevrolet, classified as a pony car and some versions also as a muscle car. It went on sale on September 29, 1966, for the 1967 model year and was designed as a competing model to the Ford Mustang. The car shared its platform and major components with the Pontiac Firebird, also introduced for 1967... 1967 Chevrolet Camaro

Tác hại của việc cho trẻ học tiếng Anh sớm và những điều cha mẹ cần lưu ý

Ngôn ngữ không chỉ là công cụ giao tiếp mà còn đóng vai trò quan trọng trong việc hình thành tư duy, sáng tạo và thể hiện bản thân của trẻ. Tuy nhiên, việc cho trẻ học tiếng Anh quá sớm, nếu không được thực hiện đúng cách, có thể mang lại nhiều tác hại hơn là lợi ích. Bài viết này sẽ phân tích những tác động tiêu cực của việc học tiếng Anh sớm và đưa ra những gợi ý để cha mẹ hỗ trợ trẻ phát triển ngôn ngữ một cách cân bằng và hiệu quả. Tác hại của việc học tiếng Anh sớm 1. Cản trở sự phát triển tiếng mẹ đẻ Tiếng mẹ đẻ là nền tảng để trẻ phát triển tư duy và giao tiếp. Khi trẻ học tiếng Anh quá sớm, đặc biệt từ những nguồn không chuẩn (như tài liệu không được thiết kế phù hợp hoặc giáo viên không phải người bản ngữ), khả năng sử dụng tiếng Việt có thể bị ảnh hưởng. Trẻ phải phân bổ thời gian và năng lượng cho cả hai ngôn ngữ, dẫn đến việc giảm thời gian khám phá, vui chơi và phát triển tiếng mẹ đẻ. Điều này có thể khiến trẻ chậm phát triển từ vựng, ngữ pháp và cấu trúc câu trong tiếng V...

Sử dụng trí tuệ nhân tạo để bảo vệ các ngôn ngữ thổ dân: Hy vọng cho sự đa dạng ngôn ngữ

Trong bối cảnh toàn cầu hóa và hiện đại hóa đang diễn ra mạnh mẽ, sự đa dạng ngôn ngữ trên thế giới đang đối mặt với nguy cơ suy giảm nghiêm trọng. Theo các nghiên cứu gần đây, gần một nửa trong số hơn 7.000 ngôn ngữ đang được sử dụng trên toàn cầu có nguy cơ biến mất vào cuối thế kỷ này. Trong số đó, các ngôn ngữ thổ dân, vốn là di sản văn hóa quý giá của nhiều cộng đồng bản địa, đang chịu ảnh hưởng nặng nề nhất do các yếu tố như thực dân hóa, toàn cầu hóa, đồng hóa văn hóa cưỡng bức và sự suy thoái môi trường. Tuy nhiên, một tia hy vọng mới đã xuất hiện khi các nhà nghiên cứu bắt đầu ứng dụng trí tuệ nhân tạo (AI) để bảo vệ và phục hồi những ngôn ngữ này. Bài viết này sẽ khám phá cách AI đang được sử dụng để bảo vệ các ngôn ngữ thổ dân, những thách thức liên quan và tiềm năng của công nghệ này trong việc duy trì sự đa dạng văn hóa toàn cầu, dựa trên bài viết từ Phys.org ngày 12 tháng 5 năm 2025. Nguy Cơ Biến Mất Của Các Ngôn Ngữ Thổ Dân Ngôn ngữ không chỉ là công cụ giao tiếp m...

Elon Musk likens lithium batteries to a new type of petroleum

Billionaire Elon Musk believes that energy security is important to the country and that lithium batteries can be viewed as a type of oil. Lithium batteries are widely used in electronic devices and electric vehicles. On July 13, David Sacks, founder of social network Yammer and former COO of Paypal, wrote on Twitter: "What is clear this year is that there will be no security without energy autonomy." Sacks refers to the troubles related to energy problems that many countries around the world are facing. Elon Musk replied: "Definitely. Lithium batteries are the new type of petroleum." Musk's comment received the support of many social media users, attracting more than 26.5 thousand likes and nearly 2 thousand retweets. This is not the first time the US billionaire has affirmed the importance of lithium battery technology. In April, he said on Twitter that "Tesla can get into lithium battery refining and mining because its price is going crazy." He cite...

WikiHowBlog

Tìm kiếm Blog này