How cloud computing security works and why skills are in demand

Cloud computing security is one of the most in-demand fields within the cyber security sector today. As organisations move more of their data, applications and systems onto infrastructure owned and operated by external providers, protecting those environments has become fundamental to how they do business.

For example, across the EU, Eurostat notes that 52.7 per cent of enterprises used paid cloud services in 2025, with this rising to 84.7 per cent among large enterprises. In the UK, three-quarters of businesses (74 per cent) depend on cloud services for securely backing up their data.

The use of cloud tools demands a specific approach to security. As environments are configured remotely and altered constantly, protection has to be designed into every stage – not be treated as a final thought.

Getting this right takes judgement, which is why employers continue to compete for professionals who have proven they have the necessary skills and experience to manage cloud deployments across public, private and hybrid environments.

Tony Samuel of CyberSecurityJobsite.com comments: “The move to cloud computing has exploded in recent years. While the cloud has been used for years, Covid pushed most companies and government departments into using it, through adoption of working from home. The market is growing quickly and enhanced cyber security means that most clients find it a more secure way of hosting their data than on traditional local area networks.”

What is cloud computing security?

Cloud computing security is the combination of technologies, controls, policies and governance used to protect data, applications and workloads that run on cloud infrastructure.

In practice, the field is broad. On the technical side, it covers controls such as identity and access management, encryption, network segmentation and continuous monitoring. Around this sits the policies and governance that determine who can view and edit data, how assets are classified and handled and how regulatory and compliance obligations are met. Together, they turn disparate security measures into a managed, accountable discipline rather than a set of isolated tools.

Cloud security must also cover a range of environments, from public and private solutions through to hybrid and multi-cloud setups that combine services from several providers. Each configuration carries its own risks and controls, so there is no one-size-fits-all approach to managing cloud security. The right measures depend on where data sits and how it moves.

The shared responsibility model explained

Cloud security is never handed over wholesale to the provider. Instead, it follows what’s called the ‘shared responsibility model’. This sets out who secures what, splitting the work between the provider and the customer. In general, the provider is expected to look after the underlying infrastructure, its physical servers, networking and the platform itself. However, issues related to how the service is used, including access controls, configurations and what data is stored on cloud systems, remain with the customers.

It’s not always clear exactly where the divide lies – and specifics may differ depending on the service model, so it’s vital to have conversations with providers about responsibilities. For example, private Infrastructure-as-a-Service deployments will often see the customer manage far more of the stack, whereas for Software-as-a-Service, the provider takes greater responsibility for cloud infrastructure security. 

Businesses need to understand this split because assuming the provider covers everything is a costly mistake. The National Cyber Security Centre states clearly that the customer is always responsible for choosing services that meet their cloud data security needs, configuring them securely and deciding what information to store. 

The following table offers a basic overview of common responsibilities and where they normally lie:

Responsibility	Owned by
Physical data centres and hardware	Provider
Network and platform infrastructure	Provider
Provision of security tools and features	Provider
Secure configuration of services	Customer
Identity and access management	Customer
Data stored on the service	Customer
Meeting compliance obligations	Customer

Security considerations for public, private and hybrid cloud

The different cloud models create their own risks due to the way they store and access data and applications. Public cloud runs on shared infrastructure operated by a provider such as AWS or Azure. Private cloud uses dedicated infrastructure for a single organisation. Hybrid cloud combines the two, moving workloads between them as needed. 

As a result, each model has its own threat profile. Key things businesses need to consider for each include:

Public cloud

• Multi-tenancy means separation between customers matters, so tenant isolation and configuration discipline are critical.
• Misconfiguration is the most common cause of exposure, as everything is reachable over the internet by default.

Private cloud

• Greater control comes with full ownership of monitoring, patching and physical security.
• Fixed capacity and in-house responsibility demand skilled staff and sustained investment.

Hybrid cloud

• Security controls must be applied consistently, or threats move between environments through the gaps.
• Data being transferred between environments needs protection in transit and clear governance over where it sits.

Key cloud security risks and threats

The cloud is not inherently less secure than on-premise systems. Major providers run robust, well-resourced security operations that few individual organisations could match. However, many vulnerabilities may arise as the result of complacency or placing too much trust in providers.

Across the sector, most cloud data breaches trace back to decisions on the customer’s side of the shared responsibility line, particularly weak configuration and poor policy, rather than failures in the underlying platform. However, even when using tools from trusted vendors, firms must also be mindful of threats such as third-party and supply chain weaknesses.

Some of the most common vulnerabilities include:

• Misconfigurations: Exposed storage, open access settings or missing encryption leave data reachable and are consistently cited as the most common cause of cloud exposure.
• Weak identity and access management: Over-permissive accounts and missing multi-factor authentication give attackers a straightforward route in.
• Insecure interfaces and APIs: Poorly secured connection points can be probed and exploited from the internet.
• Stolen or compromised credentials: Phishing and credential theft let attackers log in as legitimate users rather than break in.
• Insecure third-party resources: Vulnerabilities inherited from suppliers, integrations or components sit outside the organisation’s direct control.
• Limited visibility: Without monitoring across the whole estate, exposures and intrusions can go unnoticed for months.

Core cloud security practices and controls

No single tool secures a cloud environment. Effective protection comes from layering established practices and controls that reduce the chance of a mistake becoming a breach. The following are widely regarded as essential building blocks for any cloud security strategy:

• Identity and access management: Control which personnel and applications can reach each part of the environment, so access is deliberate rather than assumed.
• Least privilege: Grant users and services only the level of access they need, so a compromised account exposes as little as possible.
• Multi-factor authentication: Require a second factor for access, which blocks most attacks based on stolen passwords alone.
• Encryption at rest and in transit: Protect data both where it is stored and as it moves, so intercepted or exfiltrated data stays unreadable.
• Zero trust architecture: Treat no request as trusted by default, verifying every user, device and connection regardless of origin.
• Continuous monitoring and logging: Watch activity across the estate in real time to spot anomalies and respond before damage spreads.
• Secure configuration and change control: Apply hardened baseline settings and review changes, since misconfiguration is a leading cause of exposure.
• DevSecOps: Build security checks into the CI/CD pipeline so flaws are caught during development rather than after deployment.
• Regular backups and recovery testing: Maintain resilient, tested backups so operations can be restored quickly after an incident.

Why cloud security matters for modern organisations

Strong cloud security is about more than just preventing data breaches. Done effectively, it underpins how a business operates day to day. Well-secured environments detect threats faster and contain them before they spread, which cuts the downtime and disruption that follow an incident. 

For instance, consistent controls make regulatory compliance easier to demonstrate, reducing the risk of penalties and lost contracts. Reliable, well-governed systems also keep teams productive, since staff are not held up by outages or emergency fixes.

This is why organisations place such value on skilled cloud security professionals – and why the people who deliver these outcomes are among the most sought-after employees in the IT sector.

What does a cloud security professional do?

These professionals are the people who deliver that security posture in practice. Day to day, they design secure cloud architectures, set and review access policies, configure controls, monitor for threats and lead the response when incidents occur.

Cloud security isn’t just one role. It covers a range of job titles within the field that reflect various specialities and responsibilities. For example, a cloud security analyst monitors environments, triages alerts and investigates suspicious activity. Cloud security engineers build and automate the controls that protect infrastructure. Meanwhile, a cloud security architect designs the overall security framework and ensures it meets compliance obligations.

The role is also increasingly cross-functional. As security becomes embedded in software from the first line of code, these professionals work alongside development and operations teams rather than apart from them. The rise of DevSecOps captures this shift, with cloud security built into the CI/CD pipeline so it shapes how software is created throughout development, rather than being checked at the end.

Skills and certifications for a career in cloud security

Finding a role in cloud security means showing employers a mix of technical ability and practical judgement. When applying, candidates should make these strengths clear rather than leaving recruiters to infer them. Key skills to emphasise include:

• Cloud platform knowledge: Hands-on familiarity with AWS, Azure or Google Cloud and how each secures its services.
• Identity and access management: The ability to design and enforce least-privilege access across users and systems.
• Security automation and Infrastructure as Code: Skill in scripting controls and defining them in code so security scales with deployment.
• Threat detection and incident response: Confidence in spotting anomalies, investigating alerts and acting when incidents occur.
• Knowledge of frameworks and compliance: A working grasp of standards such as ISO 27001 and obligations like GDPR.

Industry cloud security certifications are also highly valuable, giving recruiters independent validation of a candidate’s capabilities. Credentials worth pursuing are:

• Certificate of Cloud Security Knowledge (CCSK): A vendor-neutral foundation from the Cloud Security Alliance.
• Certified Cloud Security Professional (CCSP): A senior vendor-neutral credential from ISC2 for experienced practitioners.
• AWS Certified Security – Specialty: Validates securing environments on AWS.
• Microsoft Certified: Azure Security Engineer Associate: Confirms security skills across Azure.
• Google Professional Cloud Security Engineer: Demonstrates securing workloads on Google Cloud.

Cloud security salary and career outlook

Cloud security is well paid, with compensation reflecting the specialist skills needed and high demand for experienced pros. ITJobsWatch puts the median salary for a UK cloud security engineer at £80,000 for the six months to 17th June 2026, with advertised salaries ranging from around £60,000 at the 10th percentile up to £96,250 at the 90th.

As a guide, expected average earnings are in the region of:

• Entry level: around £60,000
• Mid level: around £80,000
• Senior level: £96,000 and above

Prospects for advancement are also very good. Many people enter the field from an existing IT, networking or general security role, then add cloud platform skills and industry certifications. From there, they can progress from analyst or engineer positions into architect, specialist or leadership tracks as their experience deepens.

How to start a career in cloud security

If you already have a background in IT or cyber security, cloud security is one of the more accessible specialisms to move into, as it builds on skills already used across these fields. Many people enter from an adjacent role such as IT support, software development, cloud engineering or general cyber security, redirecting their existing experience rather than starting over.

A few practical steps will help you make the move, including:

• Build hands-on experience: Practise securing real environments using free provider tiers and personal projects.
• Choose a platform to specialise in: Choosing to focus on AWS, Azure or Google Cloud can help attract the attention of recruiters.
• Pursue relevant certifications: Work towards credentials such as the CCSK to validate your knowledge.
• Learn the core tools: Get comfortable with identity management, infrastructure as code and monitoring.
• Network and stay current: Join communities and keep pace with new threats and updates.

Cloud security is a growing, well-paid field with strong long-term prospects. If that appeals, explore the latest cloud security vacancies on cybersecurityjobsite.com and take your first step.

Frequently asked questions about cloud computing security careers

Is cloud computing security a good career?

Yes. It is a well-paid, in-demand specialism with strong long-term prospects, as organisations of every size continue moving critical systems to the cloud. Median UK salaries sit around £80,000, with clear routes into senior and architect roles.

What is the difference between cloud security and cyber security?

Cyber security is the broad discipline of protecting systems, networks and data from digital threats. Cloud security is a specialism within it, focused specifically on protecting data and applications hosted on cloud infrastructure and the shared responsibilities that come with it.

Do you need to know how to code for cloud security?

Not always, but it helps. Scripting skills in languages such as Python, along with infrastructure as code, are common in cloud security roles and make automation far easier. Many people build these skills on the job rather than beforehand.

What are the main types of cloud security?

Cloud security spans several areas, including identity and access management, data protection through encryption, network security as well as posture and configuration management. It also covers the differing demands of public, private and hybrid environments.

Is CCSP or CCSK better to start with?

For newcomers, the CCSK is the better starting point. It has no experience prerequisite, whereas the CCSP requires five years of IT experience, including three in security. The CCSK can also count towards one year of the CCSP’s requirement later.