virtual private cloud (VPC)

petak , 25.02.2022.

A virtual private cloud (VPC), which is an on-demand configurable pool shared resources within a public cloud environment, provides a certain degree of isolation between different organizations (described as users hereafter). One VPC user is isolated from all other cloud users (other VPC users and other public cloud users). This isolation can be achieved by allocating a private IP subnet, a virtual communication construct (such a VLAN, or a set encrypted communication channel) per user. The previously mentioned mechanism of isolation within the cloud is provided by a VPC. A VPN function (allocated per VPC user) secures remote access to the VPC resources using authentication and encryption. The described isolation levels allow an organization to work on a "virtually private" cloud. This is equivalent to the use of a VPC (which is essentially the same as working on a cloud infrastructure that is not shared by other users).
VPC is used most often in the context cloud infrastructure and as a service. This context may differ in that the infrastructure provider provides the public cloud infrastructure and the provider who implements the VPC service on top of this infrastructure could be different vendors.

What is the difference between a VPC and a Private Cloud?
Private clouds are infrastructure that is exclusively dedicated to one organization. An organization may buy cloud infrastructure and then install software. Then, they will hire an IT management team. This means that the entire organization is in control of everything.
A VPC, on the other hand runs on shared infrastructure like a public cloud. A VPC provides some isolation between cloud customers that share resources. This isolation can be achieved via a private IP subnet (or a virtual local network (VLAN). For finding out more, read about benefits of VPS.

A VPC is not necessary for everyone.
VPCs can be most beneficial to companies who need private cloud environments but also require public cloud resources and savings.

What features come with virtual private clouds?
VPCs include all the features that you would expect from a public cloud including:

1. Agility
VPCs allow you to control the size of your network as well as the ability to scale and deploy resources at any moment.

2. Security
VPCs can be part of the public cloud. However, VPCs are logically separated networks that allow you to access your data and applications independently from other clients. You must grant access to limit your resources.
A VPC environment that is logically isolated is inherently more secure. Public Cloud Security is not automatic. It must be deliberately deployed.
Cloud security is always shared between cloud providers and their clients. Users must ensure that data and applications are protected in any cloud environment. Third-party apps that detect and manage threats can help secure public cloud environments such as Amazon AWS.

3. Affordability
VPCs can be cost-effective. VPCs can help you save on hardware, labor and other cloud resources. All maintenance and upkeep of all software and hardware will be performed by the cloud provider.

4. Available
Virtual private clouds offer redundancy and fault tolerance availability zones architectures that reduce downtime and ensure applications and workloads are always available.

What are the benefits of using a VPC

1. Minimize downtime
Customers expect 100% uptime, even though it is not always possible. They have no patience for downtime of any kind - not even ten seconds. VPC environments offer the redundancy, and other features needed to meet customers' near-100% uptime expectations.
Your customers will enjoy a high level reliability that will increase loyalty and trust in your company.

2. Lower risk
VPCs will give you high security at both the subnet and instance levels.

3. Flexibility
VPCs can be adapted to your business's needs, no matter how big or small. VPCs can be easily adapted to meet changing requirements by dynamically deploying cloud infrastructure resources.

4. Cost savings
Public clouds are elastic, meaning you only pay what you use. A VPC will not require you to pay for software or hardware upgrades, and it won't cost you anything for maintenance.

Architecture
You can use a VPC to deploy cloud resources in your own isolated virtual network. These cloud resources, also known as logical instances, can be divided into three types.
Compute The Virtual server instances, also known by virtual servers, are presented to the user in the form of virtual CPUs (vCPUs), with a predetermined amount computing power, memory, and so on.
Storage: VPC clients are usually allocated a certain block storage amount per account. Customers can also purchase additional blocks . It's similar to buying additional hard drive storage. Storage recommendations are based upon the nature of your workload.
Networking: To enable or limit access to your virtual private cloud account's resources, you can install virtual versions of different networking functions. These include public Gateways that allow access to all or part of your VPC environment on the public-facing Internet. Load Balancing distributes traffic across multiple VSIs to maximize availability and performance. Routers direct traffic and facilitate communication between network segments. Your private cloud resources or on-premises enterprise IT environment can be connected to your public cloud resources via dedicated or direct links. This allows for rapid and secure communication.

VPC vs. Virtual Private Network (VPN).
Virtual private networks (VPNs) make a connection with the public Internet just as secure as one to a private network. They create an encrypted tunnel through the network that the information travels. To establish a secure site to site communication channel between your VPC, your environment on-premises or any other location, you can install a VPN as-a-Service (VPNaaS). You can connect subnets to multiple VPCs using a VPN so they work as though they are on one network.

VPC vs. Private Cloud
Sometimes, virtual private cloud and private cloud can be mistakenly used interchangeably. A virtual private cloud is in fact a public Cloud offering. A private Cloud is an environment that is owned, operated and managed solely by the enterprise. It is usually hosted on-premises, or in dedicated space. A VPC, on the other hand, is multi-tenant and hosts each customer's data, workloads, and information. This logical isolation is maintained by the cloud provider.

VPC vs. the public cloud
Virtual private clouds are a single-tenant model that allows you to create your own private space within the public cloud architecture. VPCs offer greater security than traditional multi-tenant cloud offerings, but customers still have the ability to take advantage of high availability, flexibility and cost-effectiveness in the public cloud. There may be several ways to scale a VPC or a public cloud account. Additional storage volumes might only be available in blocks that are a specific size for VPCs. VPCs do not support all public cloud features.

Which are the Top Virtual Private Cloud Service Providers in the World?
Selecting a reliable and trustworthy vendor to provide the infrastructure is the first step in establishing your virtual private cloud environment. Some of the world's most prominent technology companies are leaders in virtual private cloud.

Amazon Virtual Private Cloud
Amazon VPC was launched August 2009. Amazon VPC offers a variety of connectivity options and features. Amazon VPC can be used to host simple websites or multi-tier web apps, as well as scalable apps that connect with back-end data systems. Amazon's virtual private clouds are also great for disaster recovery. This allows organizations to back up their data in order to maintain business continuity in the event of a loss at their data centers.

Google Virtual Private Cloud
Google VPC is unique in that it offers many features that make it stand out from the rest. One VPC can be used to cover multiple regions. This allows IT organizations to share the same virtual servers across different regions. VPC peering is also an option to allow private communication within the company. VPCs can be set up for free, but users will be charged based on how much they use.

IBM Virtual Private Cloud
IBM's virtual private clouds product provides the best features and customization options for VPC deployments. You can create virtual servers, manage your own gateways and subnets, and add storage to suit your needs. You have full control over IP ranges and security groups.