What is cloud computing and how does it work?

Think about the last time you streamed a show, saved photos online, or collaborated on a project with your team without worrying about where the files were stored. Chances are, you were tapping into the power of cloud computing. Cloud computing is behind the scenes of so much of what we do every day, from personal tasks to business-critical operations.

But what exactly is the cloud? And why are more businesses turning to it to fuel their growth? Let's dive into how cloud computing works, why it's important in our digital environments, and how companies like yours are using it for data storage to application development platforms.

Cloud computing is the on-demand delivery of computing resources like servers, storage, databases, networking, and software over the internet — so you only pay for what you use (pay-as-you-go pricing). It removes the need to buy, manage, or maintain physical hardware yourself, giving you instant access to powerful tools and infrastructure whenever you need them.

Whether you're a startup building an app, a global business crunching massive data sets, or simply storing personal files, cloud computing puts the power of top-tier IT infrastructure at your fingertips. You can access resources as needed, pay for only what you use, and avoid the hassle of managing physical servers or hardware.

This ability to “borrow” computing resources from cloud providers makes cloud computing an attractive option for businesses of all sizes. It opens up new possibilities for innovation, flexibility, and growth –all without breaking the bank on IT overhead.

In ASEAN, cloud computing is the foundational engine driving unprecedented digital growth. As nations like Malaysia see record-breaking investments in data centres and cloud infrastructure, and with expanded 5G coverage in Thailand accelerating cloud adoption among businesses, the 'why' of cloud is clear. It is the essential platform enabling the region's ambition to become a leading global digital community, allowing businesses to scale securely and innovate faster than ever before.

As cloud adoption accelerates across ASEAN, data sovereignty and security have become paramount. Businesses and governments are increasingly turning to trusted cloud platforms that can meet stringent local data residency and security requirements. Singapore, for instance, is leading the way by adopting sovereign cloud solutions to handle sensitive government workloads , setting a precedent for the region. This focus on trust and compliance is crucial for any business operating in Southeast Asia, making a secure and transparent cloud platform a non-negotiable part of their digital strategy.

Not all clouds are created equal. Depending on your business needs and how much control you want over your data and infrastructure, there are different types of cloud computing models to choose from. Here's a breakdown of the main deployment models.

When moving to the cloud, one of the first choices you'll face is how to deploy it. Do you want full control, maximum flexibility, or a mix of both?

In a public cloud, services and infrastructure are hosted by third-party cloud providers and shared amongst multiple customers. It's the most common model – cost-effective, flexible resources that can be scaled up or down based on your needs. Public cloud is ideal for businesses that want to avoid managing physical hardware and are comfortable with a shared environment.

A private cloud offers more control and exclusivity. In this model, the infrastructure is dedicated solely to one organisation, either hosted on-premise or by a third-party provider. This is perfect for companies with strict compliance, security, or performance requirements, as it allows for more customisation and control over the environment.

As the name suggests, a hybrid cloud blends the best of both worlds – combining private and public clouds. It allows businesses to keep sensitive data or mission-critical applications in a private cloud whilst leveraging the flexibility and cost-efficiency of the public cloud for less-sensitive tasks. This model provides greater flexibility and data management options.

In a multicloud environment, businesses use multiple cloud providers to meet their specific needs. For example, a company might use one provider for storage and another for the application development process. This approach helps avoid vendor lock-in and allows businesses to optimise costs and services by choosing the best provider for each task.

Beyond deployment models, there are various types of cloud computing services that businesses can take advantage of, depending on their needs.

IaaS offers businesses access to essential IT infrastructure like virtual machines, storage, and networks – all delivered over the internet. With IaaS, companies can scale infrastructure resources on demand without investing in physical hardware. It's a great choice for businesses needing flexibility and cost control, especially for hosting websites or running development environments.

PaaS provides a platform where developers can build, test, and deploy applications without managing the underlying infrastructure. It offers everything needed to develop an app, including development tools, databases, and operating systems – all in the cloud. PaaS accelerates the development process, allowing teams to focus on coding rather than worrying about servers.

SaaS delivers software applications over the internet, allowing users to access tools and services without needing to install or maintain them. From email and CRM platforms to collaboration tools, SaaS makes it easy for businesses to deploy and scale software to meet their needs – no IT maintenance required.

Serverless computing takes cloud abstraction to the next level. With this model, developers can build and run applications without managing the infrastructure at all. The cloud provider automatically allocates resources as needed, allowing businesses to focus purely on code and innovation. It's ideal for dynamic applications where resource usage may fluctuate frequently.

From a business perspective, especially those going through a digital transformation, there are seemingly endless advantages of cloud computing. It positively impacts budgets, security, and more, particularly compared to more traditional IT infrastructure. Here's a breakdown of the core benefits of cloud computing.

With cloud computing, everything from data storage to running applications is just a few clicks away. Businesses no longer need to worry about installing software on every device or managing server hardware. The cloud offers instant access to resources and applications from anywhere, at any time – making it convenient for remote teams or global operations.

Cloud computing gives businesses the flexibility to scale their IT resources up or down as needed. This means companies can easily adjust to seasonal spikes, growing customer demands, or sudden changes in business needs. Whether you need extra computing power or additional storage, cloud solutions let you pay for only what you use, when you need it.

One of the biggest advantages of cloud computing is its cost-effectiveness. By moving to the cloud, businesses can avoid hefty upfront costs of purchasing hardware and maintaining on-site data centres. With a pay-as-you-go model, companies can manage their budgets more effectively and reduce waste from unused resources.

Whether you're expanding into new markets or rolling out new products, cloud providers give you the ability to grow without worrying about hardware limitations. This elasticity helps your infrastructure handle growth while keeping costs manageable.

Cloud providers also offer built-in redundancies and automatic backups, meaning businesses can count on high uptime and data availability. With global data centres, your information is stored across multiple locations, reducing the risk of downtime and data loss due to local failures. This level of reliability allows businesses to keep running smoothly, even during unexpected disruptions.

Cloud providers implement top-tier security measures, including encryption, multi-factor authentication, and continuous monitoring. While businesses are responsible for protecting their data on their end, the cloud offers robust defences against cyberattacks and unauthorised access.

Cloud computing uses a vast network of remote servers hosted on the internet, rather than on local computers or physical servers. When you use cloud services, you're essentially borrowing space and processing power from these remote data centres.

Here's how it works: instead of buying, owning, and maintaining physical servers and data centres, businesses rent access to storage, computing power, and other technology resources as needed. This allows for greater flexibility – you can scale up resources when demand spikes or scale down during slower periods without investing in expensive infrastructure.

The key technologies behind cloud computing include virtualisation, which allows multiple users to share the same physical hardware securely, and DevOps automation tools that manage and optimise cloud resources. Cloud providers handle the heavy lifting, such as server maintenance, security patches, and system updates, letting businesses focus on innovation instead of IT headaches.

The result? Businesses can operate more efficiently, without the burden of managing infrastructure, and focus on delivering value to customers – whether that's building apps, analysing data, or supporting remote teams.

Cloud computing is behind some of the most innovative solutions and everyday services that businesses and consumers rely on. From building new applications to managing vast amounts of data, here's how cloud computing is being used across different industries.

Cloud platforms provide developers with the tools and environments to build and deploy applications faster than ever. For example, many businesses are turning to a low-code development platform to accelerate the process, allowing teams to build, test, and deploy apps without extensive coding expertise.

Platforms that support low-code and no-code development give organisations the ability to innovate faster. Cloud-native apps are designed to take full advantage of the cloud's flexibility, scalability, and reliability, which means businesses can deliver new products and services to customers more quickly.

One of the most common uses of cloud computing is data storage. Businesses can securely store vast amounts of data in the cloud, making sure it's easily accessible while helping with data loss prevention. With automatic backups and disaster recovery features, cloud platforms help companies safeguard their information and restore it quickly in case of an outage or cyberattack.

When you stream your favourite show or music, there's a good chance cloud computing is making it happen behind the scenes. Services like Netflix and Spotify rely on cloud infrastructure to deliver seamless streaming to millions of users, giving those users a smooth experience regardless of geographic location or device.

Cloud computing makes Software as a Service (SaaS) possible, where businesses can deliver applications over the internet rather than through traditional installation. This means customers can access software instantly, from any device, without needing to manage downloads or updates – think of platforms like Dropbox or Slack.

The cloud provides a ready-made environment for developers to test and build applications. Instead of waiting for physical hardware, developers can instantly spin up resources in the cloud, run simulations, and perform testing, all while reducing time-to-market.

Cloud computing is crucial for businesses looking to analyse massive datasets. It allows organisations to perform big data analytics without the need for expensive, on-premise hardware. Companies can make smarter, faster decisions by processing large amounts of data instantly, gaining insights that drive growth.

The cloud makes it easier to integrate advanced technologies like artificial intelligence (AI) and machine learning (ML) into everyday operations. Businesses can leverage these tools to improve customer experiences, automate processes, and make data-driven decisions faster.

Cloud computing is everywhere, powering some of the most familiar services and platforms we use daily. Here are some examples you may be familiar with:

• E-commerce platforms: Online retailers like Amazon use cloud infrastructure to manage massive amounts of data and traffic, especially during peak shopping seasons.
• Collaboration tools: Services like Slack , or use the cloud to offer instant collaboration, file sharing, and communication for remote teams. These tools make it easy for businesses to work together, regardless of geographic location.
• Customer relationship management (CRM) systems: Cloud-based CRM solutions, like Salesforce, help businesses with customer data protection, simplify workflows, and improve customer service. With cloud computing, CRMs are accessible from anywhere, so teams can stay connected and responsive.

The future of cloud computing is shaping up to be even more dynamic and innovative. Key trends include the rise of edge computing, which brings data processing closer to users, reducing latency.

Custom AI and machine learning will continue to integrate into cloud platforms, making it possible to make even smarter, more data-driven decision-making for businesses. Sustainability is also gaining traction, with more cloud providers focussing on eco-friendly data centres to reduce their carbon footprint.

As businesses continue to adopt hybrid and multicloud strategies, expect to see more customisation and flexibility in how companies use the cloud to meet their needs.

Choosing the right cloud computing solution depends on your business needs, goals, and resources. Start by evaluating what your organisation requires – whether it's scalability, specific cloud computing services like IaaS or SaaS, or specialised features like enhanced security for sensitive data.

Consider working with cloud providers that offer flexibility in terms of pricing, service levels, and support. If you're developing custom applications, explore platforms that support cloud-native development, like Salesforce's application development platform. For businesses with strict data privacy needs, make sure the provider offers strong data protection options, like those found in cloud data security solutions.

The key is to find a solution that grows with your business, integrates seamlessly with existing tools, and meets your operational needs without over-complicating your IT infrastructure.