"In the cloud, computing becomes limitless, and opportunities for innovation become boundless."- Diane Greene
What is cloud computing?
According to NIST (National Institute of Standards and Technology):
Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
On the other hand cloud computing is also defined as:
Cloud computing is the on-demand delivery of IT resources over the Internet with pay-as-you-go pricing.
Earlier terms for cloud
Centralized Computing: All processing is performed on a central server.
Grid Computing: A group of computers physically connected over the internet to perform a task.
Distributed Computing: It allows resource sharing among multiple computers to improve efficiency or performance.
On-demand Computing: Computer resources are made available on demand to the user when they are needed.
Hosting: A service through which storage and resources are provided to an individual or an organisation.
Application Service Provider (ASP): A company that delivers application functionality and associated services using a rental or usage-based transaction pricing model.
Waves in computations
First wave: Colocation i.e. Using Self Data-centers
Second wave: Virtualized Data-centers i.e. Organization Data-centers, On -Demand Services
Third Wave: Container-based architecture i.e. Fully Automated
Cloud Architecture VS Traditional Architecture
Traditional architecture offers greater control and customization but requires substantial upfront investments and ongoing maintenance. On the other hand, cloud architecture provides flexibility, scalability, cost-efficiency, and rapid deployment, but organizations may need to trust third-party providers with their data and applications. The choice between cloud and traditional architecture depends on specific business needs, security considerations, and budget constraints. Many organizations opt for hybrid solutions that combine elements of both cloud and on-premises infrastructure to leverage the benefits of each approach.
Characteristics of cloud computing
On-Demand Self-Service: You can quickly access and manage computing resources like servers, storage, and applications without needing to contact anyone for manual setup or approval.
Broad Network Access: Cloud services are available over the internet, allowing you to use them from various devices like laptops, tablets, and smartphones.
Resource Pooling: Cloud providers pool their computing resources, and multiple users can share these resources, making them more efficient and cost-effective.
Rapid Elasticity: Cloud services can easily scale up or down to accommodate changes in demand, ensuring you have the right amount of resources when you need them.
Measured Service: Cloud usage is measured, and you only pay for what you use, similar to utilities like electricity or water bills.
Benefits of cloud computing
Flexibility: Cloud computing allows you to access your data and applications from anywhere with an internet connection, giving you the flexibility to work from home, in the office, or on the go.
Cost-Efficiency: With cloud services, you don't need to invest in expensive hardware or software upfront. Instead, you pay for what you use, making it more cost-effective, especially for small businesses.
Scalability: Cloud resources can be easily scaled up or down based on your needs. Whether you're experiencing high traffic or low demand, the cloud can adapt to match your requirements.
Security: Leading cloud providers implement advanced security measures, protecting your data from unauthorized access and providing a level of security often beyond what small businesses can afford on their own.
Global Accessibility: Cloud services have data centres in various regions worldwide, ensuring fast and reliable access to your data from anywhere in the world.
Data Backup and Recovery: Your data is stored securely in the cloud, reducing the risk of data loss. Most cloud providers offer robust backup and recovery options to protect your information.
Increased Storage Capacity: Cloud storage solutions offer virtually limitless space, eliminating worries about running out of storage on your local devices.