1. Scalability: One key difference between Liferay and Spring Boot is their scalability. Liferay is a robust enterprise-level platform designed for building and managing complex web applications. It provides features like clustering and high availability, which allow it to handle large amounts of traffic and users. On the other hand, Spring Boot is a lightweight framework that focuses on simplicity and ease of development. While it can handle moderate levels of traffic, it may not be suitable for highly scalable and demanding applications.

2. Functionality: Another significant difference between Liferay and Spring Boot is their functionality. Liferay is a feature-rich platform that offers a wide range of built-in features like content management, collaboration tools, user management, and more. It provides a comprehensive suite of capabilities, making it well-suited for creating and managing enterprise portals and websites. Spring Boot, on the other hand, is a microservices framework that provides the basic infrastructure for building standalone applications. It focuses on simplicity and flexibility, allowing developers to choose and integrate the required functionality as per their specific needs.

3. Development Paradigm: Liferay and Spring Boot also differ in their development paradigms. Liferay follows a traditional monolithic architecture, where all the modules and components are tightly coupled within the platform. This can be advantageous for maintaining consistency and stability within the application but may lead to slower development and deployment cycles. Spring Boot, on the other hand, embraces a microservices architecture, allowing developers to modularize and deploy independent services. This enables faster development and deployment cycles, making it suitable for agile and iterative development processes.

4. Extensibility: Liferay and Spring Boot differ in terms of their extensibility. Liferay provides a robust plugin architecture, which allows developers to extend the platform's functionality by creating custom plugins. These plugins can range from simple portlets to complex applications integrated seamlessly within the Liferay ecosystem. Spring Boot, on the other hand, follows a more modular approach, where developers can easily integrate external libraries and frameworks to enhance the capabilities of their applications. It provides a wide range of extensions and integrations that can be leveraged to create scalable and extensible applications.

5. Community and Ecosystem: Liferay and Spring Boot have different community sizes and ecosystems. Liferay has a dedicated and active community of developers and contributors, with a strong focus on enterprise adoption. It has been around for many years and has a mature ecosystem of plugins, themes, and integrations. Spring Boot, on the other hand, is backed by the larger Spring community, which is known for its extensive documentation, resources, and support. It has a vibrant ecosystem with a wide range of libraries, frameworks, and tools that can be leveraged for application development.

6. Deployment Options: Liferay and Spring Boot differ in their deployment options. Liferay is typically deployed as a standalone application server or as a cluster of servers. It requires specific server configurations and setup to run. Spring Boot, on the other hand, provides more flexibility in deployment options. It can be deployed as a standalone executable JAR file, a servlet in a traditional web container, or within a cloud environment. This flexibility allows developers to choose the deployment approach that best suits their requirements and infrastructure.

In Summary, Liferay is a scalable, feature-rich enterprise platform with a traditional monolithic architecture and a strong community, whereas Spring Boot is a lightweight framework with a modular microservices architecture, focusing on simplicity, extensibility, and flexibility in deployment options.