Alfresco's founding engineers designed a product to support modern ECM requirements
based on principles that are still in use today.
Support ECM requirementsAlfresco architecture supports the requirements
of Enterprise Content Management (ECM) applications, such as Document Management (DM), Web
Content Management (WCM), Digital Asset Management (DAM), and Search.
Each of these disciplines has unique and overlapping characteristics so the design of each
Alfresco capability is not done in isolation but in the context of the whole system.
Simple, simple, simpleAlfresco aims to be as simple as possible to
develop against, customize, deploy, and use. The simplest and probably most widely deployed
ECM solution is the shared document drive: the Alfresco architecture is driven by the desire
to be as simple as a shared drive.
Scaling to the enterpriseEvery service and feature of Alfresco is
designed up front to scale in terms of size of data set, processing power, and number of
Modular approachAlfresco architecture takes a modular approach in which
capabilities are bundled into modules whose implementation may be replaced if required, or not
included at all. Cross-cutting concerns are encapsulated through Aspect-Oriented Programming
(AOP) techniques, allowing for fine-tuning and optimization of an ECM solution.
Incorporating best-of-breed librariesWhere possible, Alfresco
incorporates best-of-breed third-party libraries. The open source nature of Alfresco lends
itself to integrating with the wealth of available open source libraries. This is done
whenever it is more profitable to integrate than build or whenever expertise is better
provided in another project rather than in-house.
Environment independenceAlfresco ECM does not dictate the environment
upon which it depends, allowing choice in the operating system, database, application server,
browser, and authentication system to use when deploying Alfresco. ECM is less about the
application and more about the services embedded within an application. You can choose how to
package Alfresco — for example, as a web application, an embedded library, or portlet.
Solid coreThe heart of Alfresco ECM is implemented in Java. This
decision was driven by the wealth of available Java libraries, monitoring tools, and
enterprise integrations. Java is also a trusted runtime for many enterprises wishing to deploy
applications in their data centers. Each Alfresco capability is implemented as a black-box
Java service tested independently and tuned appropriately.
Scriptable extensionsExtensions will always need to be created for
custom solutions and there are many custom solutions versus the single Alfresco core.
Therefore, Alfresco extension points are developed using JVM-based scripting languages,
allowing a much wider pool of developers to build extensions versus those that can contribute
to the Alfresco core. Extensions are packaged entities, allowing for the growth of a library
of third-party reusable extensions.
Standards-based approachThe Alfresco architecture always complies with
standards where applicable and advantageous. Primary concerns are to reduce lock-in, improve
integration possibilities, and hook into the ecosystems built around the chosen standards.
Architecture of participationThe Alfresco architecture promotes a system
designed for community contribution. In particular, the architecture principles of a solid
core, modularity, standards compliance, simplicity of development, and scriptable extensions
encourage contribution of plug-ins and custom ECM solutions. Participation complements the
open source approach to the development of Alfresco and fosters growth of the Alfresco
community. As the community grows, the quality of self service improves, as well as the
quality of feedback to Alfresco. This, in turn, enhances Alfresco and creates the ultimate