What is Docker

What is Docker and Why is it so important?

Docker is a platform that has revolutionized the way we deploy and run applications. It allows developers to easily package, distribute, and run applications in a containerized environment. In this blog post, we will discuss what Docker is, how it works, and why it is so important for modern software development.

What is Docker?

Docker is a platform that uses containerization technology to package and distribute software in a way that makes it easy to deploy and run on any system that supports the Docker runtime. A container is a lightweight, standalone, executable package of software that includes everything needed to run a piece of software, including the code, runtime, system tools, libraries, and settings. Containers are isolated from one another and from the host system, allowing for more consistent and reliable deployment of applications.

Benefits of Using Docker


One of the main benefits of Docker is its portability. Because Docker containers can run on any system that supports the Docker runtime, it is easy to deploy applications across different environments, such as development, testing, and production. This allows developers to write code on their local machines, test it in a staging environment, and then deploy it to production without any changes. This eliminates the “works on my machine” problem and makes it much easier to collaborate with other developers on a project.


Containers are isolated from each other and from the host system, so applications do not interfere with each other and can run consistently regardless of the host system’s configuration. This means that if one application is running on a particular version of a library or tool, it will not affect other applications running on the same system. This makes it much easier to manage dependencies and ensures that applications will run as expected in any environment.

3. Easy Scaling:

Docker also allows for easy scaling of applications. By adding or removing containers as needed, developers can easily scale their applications to meet the demands of their users. This is especially useful for applications that experience a lot of traffic, as it allows for easy scaling up or down of resources as needed.

4. Ease of Use:

Docker provides a simple and consistent way to package, distribute, and run applications. This makes it easy for developers to work with and deploy applications, which can lead to more efficient development and faster time to market. Additionally, Docker’s containerization technology allows developers to separate their applications into smaller, more manageable components, which can make it easier to maintain and update.

5. Cost Efficient:

Docker also has a cost-efficiency benefit. Containers are lightweight and can run on a single machine, this allows you to reduce the number of servers that are needed to run your application, thus reducing the cost of infrastructure. This can save a lot of money for companies, especially those that have a large number of servers running their applications.

6. Microservice Architecture:

Docker enables a microservices architecture, where each service of an application can be containerized and deployed independently. This allows for more flexibility and scalability in managing and updating the application. By breaking down the application into smaller, more manageable components, developers can more easily update and scale each component independently, which can lead to more efficient development and faster time to market.


Docker is a powerful platform that has revolutionized the way we deploy and run applications. Its portability, isolation, scalability, and ease of use make it an essential tool for modern software development. It also provides cost efficiency and support for microservices architecture which makes it even more valuable. As technology continues to evolve, it is likely that Docker will become even more important for software development in the future.

At Krify, we have a pool of professional developers who are well-versed with the latest technologies and trends and would deliver quality-oriented results, based on the client’s requirements. If you want to know more about Docker, our technical consultants will assist you with our best solutions. For more information, contact us.


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