Multi cloud security - definition, challenges and best practices

What is Multi Cloud Security? Definition, Challenges and Best Practices

In today’s world of cloud computing, businesses rely heavily on multiple cloud providers to run their operations.

While a multi cloud environment offers more flexibility, which can aid in cost management, prevent vendor lock-in, and enhance the resilience of your organization, the use of multiple clouds brings its own set of security challenges.

For starters, ensuring the security of data and applications spread across various clouds is a complex task. 

But there is one strategy that organizations can use to improve their cloud security posture management and that is by implementing a multi cloud security.

In this blog post, we will dive deeper into the multi cloud security subject, covering why it’s important, its challenges, and best practices to follow.

What is multi cloud security?

Definition of multi cloud security

Multi cloud security is the practice of securing data and applications that are distributed across multiple cloud environments or platforms. It is a proven approach for securing multiple clouds, applications, and data to prevent unauthorized access, theft, or loss of sensitive information.

It involves implementing a security strategy that spans across multiple cloud providers, rather than relying on a single provider. 

Multi cloud security aims to provide a comprehensive security solution that covers all the different cloud services an organization uses. It includes managing access controls, monitoring user activity, identifying and managing threats, and ensuring compliance with regulations.

Why is having a multi cloud security strategy important?

A multi cloud security strategy is important because it helps protect your data and applications from a wide range of threats. 

When you use multiple cloud providers, you spread out your risk and reduce the chances of a single point of failure or security breach. 

But if you’re still not convinced why a multi cloud security strategy is crucial, here are a few specific reasons that just might change your mind.

Reasons to implement multi cloud security

Diversification of risk – By using multiple cloud providers, you can spread out your data and applications across different platforms, reducing the risk of losing everything in case one provider experiences a security breach or outage.

Avoiding vendor lock-in – Using multiple cloud providers gives you the freedom to choose the best provider for each specific application or workload, rather than being locked into one provider’s services.

Improved compliance – Different cloud providers have different compliance certifications and security standards, so by using multiple providers, you can ensure that you are meeting all of the necessary requirements for your industry or region.

Enhanced security – Multi cloud environments can be more secure than single-cloud environments because they allow for more complex security configurations and redundancies.

Overall, a multi cloud security strategy helps ensure that your data and applications are secure, accessible, and available in the event of an outage or security incident.

Top multi cloud security challenges

As just mentioned, multi cloud comes with incredible scalability & flexibility, but it also comes with its own novel challenges. So, if you’re planning to adopt a multi cloud environment for your organization, it’s important to understand and be prepared to overcome its challenges.

The main multi cloud security challenges are as follow:

Challenges of multi cloud security


One of the major and most critical challenges of multi cloud security is its complexity. With multiple cloud providers and services in use, it can be difficult to keep track of everything and ensure that each component is configured correctly. 

This complexity can lead to misconfigurations (more on this later) as well as increased risk of cyberattacks. Fortunately, there are now cloud security automation tools available that can help simplify and streamline deployment and configuration processes. 

By using such tools, you can ensure that configurations are consistent across all cloud services in use, minimizing the risk of misconfigurations and security incidents.

Lack of visibility

Another major challenge is the lack of multi cloud visibility. With data and applications spread across multiple providers, it can be difficult to get a complete picture of what’s happening in each environment. 

This, in turn, can lead to blind spots and increased risk of security incidents, as well as compliance issues.

Good news is that there are now multi cloud security tools that can help to aggregate data from multiple cloud environments and provide a centralized view of security events. As a result, organizations can easily identify potential security incidents and respond quickly to mitigate them.


Misconfigurations are a common cause of security incidents in multi cloud environments. With so many different services and configurations in use, it can be easy to overlook a critical setting or make a mistake that leaves a system vulnerable to attack.

The good news is, organizations can easily overcome this challenge by implementing policies and procedures that ensure all cloud services are configured correctly and consistently. 

Plus, they can also invest in regular employee training and awareness programs that educate staff on the importance of proper configuration and security practices. This way, organizations can certainly minimize the risk of misconfigurations along with other security incidents.

Data security

Data security is always a top concern for organizations, and in a multi cloud environment, it can be even more challenging. This is because it is difficult to protect data from unauthorized access or theft when it is spread across multiple providers. In addition, data transfer between clouds can create additional security risks.

Fortunately, there are several ways to ensure multi cloud data security. For starters, organizations can implement strong encryption and access control policies that protect data at rest and in transit. 

Secondly, organizations can also implement access control policies that restrict access to data based on user roles and permissions. This way, organizations can ensure that data is only accessed and used by authorized users and that it is not accidentally or maliciously shared outside the organization.

Shared responsibility

Finally, one of the biggest challenges of multi cloud security is the shared responsibility model that cloud providers operate under. 

While providers are responsible for the security of their infrastructure, customers are responsible for securing their own data and applications. 

This can create confusion and uncertainty about who is responsible for what, and increase the risk of security incidents, especially if your organization is implementing for the first time.

Therefore, organizations must make sure to clearly define and communicate their requirements and responsibilities to cloud providers. 

This can include conducting regular security assessments and audits to ensure that cloud providers are meeting their security obligations & working collaboratively to identify and address potential security issues.

Multi cloud security best practices

Now that you know about the main challenges, let’s discuss the multi cloud security best practices to help make sure that your organization remains secure across all your cloud environments.

Best practices for implementing multi cloud security

Implement a comprehensive identity & access management strategy

Identity and access management (IAM) is a critical aspect of securing your multi cloud environment. 

A comprehensive IAM strategy must include defining roles and permissions, enforcing strong passwords, and implementing multi-factor authentication (MFA). 

By defining roles and permissions, you can ensure that users only have access to the resources they need to perform their job functions. Furthermore, strong passwords and MFA also help prevent unauthorized access to cloud resources.

But if you’re planning to implement IAM, consider using a centralized cloud security solution that can manage access across multiple cloud environments. This will help you ensure consistent security policies and reduce the risk of misconfigured access controls.

Encrypt data at rest & in transit

Encrypting data at rest and in transit is essential to protect sensitive data in your multi cloud environment. 

When data is “at rest,” it means it’s stored in a cloud environment, such as a database or file storage system. Similarly, when data is “in transit,” it means it’s being transferred between cloud environments or between a cloud environment and a user’s device.

To encrypt data in transit, use secure communication protocols like Transport Layer Security (TLS) or Secure Sockets Layer (SSL). These protocols encrypt data as it’s transmitted over a network, preventing unauthorized access to data in transit.

To encrypt data at rest, on the other hand, consider using server-side encryption or client-side encryption. Server-side encryption encrypts data before it’s written to disk in a cloud environment, while client-side encryption encrypts data on a user’s device before it’s uploaded to the cloud.

Conduct vulnerability assessments regularly

Another best practice to follow for multi cloud security is conducting regular vulnerability assessments, ideally quarterly or half-yearly. 

With regular vulnerability assessments, organizations can identify potential security weaknesses in their multi cloud environment and ensure that your environment remains secure as new threats emerge.

When conducting a vulnerability assessment, we recommend using automated tools because they help to streamline the process and ensure that you don’t miss any potential vulnerabilities. 

Automated tools can scan your cloud environments for known vulnerabilities and provide reports on any issues that need to be addressed.

And once vulnerabilities are identified, make sure to prioritize remediation efforts based on the severity of the vulnerability and the risk it poses to your environment. This is because some vulnerabilities may require immediate attention, while others may be less critical and can be addressed over time.

Monitor & analyze logs & events

Monitoring and analyzing logs and events is an equally important practice for multi cloud security because it too helps to identify potential security threats in your multi cloud environment. These potential security risks generally include identifying suspicious logins, attempted breaches, and other security incidents.

When analyzing logs and events, look for patterns or anomalies that may indicate a security incident. For example, a sudden increase in failed login attempts could indicate a brute-force attack, while a large number of database queries from a single IP address could indicate an attempted data exfiltration.

Use a unified multi cloud security management solution

Last but not least, consider investing in a unified multi cloud security management solution. Such solutions come with a centralized dashboard for managing security policies and configurations, as well as automated tools for threat detection and response. This, in turn, allows your organization to simplify security management across all cloud environments. 

However, when choosing a multi cloud security management platform, look for one that supports all your cloud providers and integrates with your existing security solutions like our Scrut’s CSPM solution does. 

Furthermore, our solution even provides real-time visibility into your cloud environments, allowing you to quickly identify potential threats and take action to mitigate them.

In addition to providing centralized security management, our CSPM solution can also help you enforce consistent security policies across all your cloud environments. This can help reduce the risk of misconfigured access controls and ensure that all cloud environments meet your organization’s security requirements.

Secure your multi cloud environment with Scrut!

The rise of multi cloud environments has presented businesses with new challenges when it comes to securing their data and applications. While there is no one-size-fits-all solution to multi cloud security, organizations can certainly consider investing in a CSPM solution to safeguard their cloud assets.

Scrut’s CSPM solution can help to proactively monitor your cloud environment and ensure that your systems and data are secure and compliant with industry regulations and standards.


What is multi cloud security?

Multi cloud security refers to the practice of using technologies and best practices to safeguard applications and data that are spread across multiple cloud environments.

How does multi cloud security work?

Multi cloud security involves implementing a combination of strong cloud security measures and cloud security tools/solutions to protect cloud assets that are distributed across multiple cloud environments.

Is multi cloud better strategy?

Whether multi cloud is a better strategy depends on the specific needs and goals of an organization. If your primary requirements are flexibility, resilience, and cost-saving, then multi cloud is certainly a good strategy to consider.

What is the difference between hybrid cloud and multi cloud security?

Hybrid cloud and multi cloud are two distinct cloud computing models with different security requirements. In a hybrid cloud, data and applications can move between the on-premises infrastructure and the cloud environment as needed. In a multi cloud environment, on the other hand, data and applications are distributed across different cloud environments.

Which tools can be used for multi cloud security?

There are several tools that can be used for multi cloud security to help protect data and applications such as CASB, IAM, CWPP, and CSPM to name a few.

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