Reference: Glossary

Term Definition
Archive File From Wikipedia: An archive file is a file that is composed of one or more computer files along with metadata. Archive files are used to collect multiple data files together into a single file for easier portability and storage, or simply to compress files to use less storage space. Archive files often store directory structures, error detection and correction information, arbitrary comments, and sometimes use built-in encryption.
Archive Format From Wikipedia: An archive format is the file format of an archive file. Some formats are well-defined by their authors and have become conventions supported by multiple vendors and communities.
Artifact From Maven: An artifact is something that is either produced or used by a project. Examples of artifacts produced by Maven for a project include: JARs, source and binary distributions, WARs. Each artifact is uniquely identified by a group id and an artifact ID which is unique within a group.
Asset Assets are the material addition to component metadata. These files provide basic information about components.
Central Repository From central.sonatype.org: The Central Repository is the the default repository for Apache Maven, SBT and other build systems and can be easily used from Apache Ant/Ivy, Gradle and many other tools.
Component In Nexus Repository Manager, the term component describes items like a package, library, binary, container, or any other resource used as part of your software application. In different tool-chains, components are called artifact, package, bundle, archive and so on.
Continuous Delivery Continuous delivery is an extension of continuous integration. It focuses on automating the software delivery process so that teams can easily and confidently deploy their code to production at any time. For more information, please see An Introduction to Continuous Integration, Delivery, and Deployment from DigitalOcean.
Continuous Integration Continuous integration is a practice that encourages developers to integrate their code into a main branch of a shared repository early and often. For more information, please see An Introduction to Continuous Integration, Delivery, and Deployment from DigitalOcean.
DevOps The basis of DevOps is to unify software development (Dev) and software operation (Ops). The main characteristic of the DevOps movement is to strongly advocate automation and monitoring at all steps of software development, from integration, testing, and releasing to deployment and infrastructure management. For more information, please see What is DevOps from AWS.
File Format From Wikipedia: A file format is a standard way that information is encoded for storage in a computer file. It specifies how bits are used to encode information in a digital storage medium. File formats may be either proprietary or free and may be either unpublished or open.
Group Repository A repository that allows you to combine multiple repositories and other repository groups in a single repository. This in turn means that your users can rely on a single URL for their configuration needs, while the administrators can add more repositories and therefore components to the repository group.
Hosted Repository A repository that stores components in the repository manager as the authoritative location for these components.
Maven From Apache Maven: A software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of information.
npm From npmjs.com: npm is the package manager for JavaScript. npm makes it easy for JavaScript developers to reuse code other developers have shared.
NuGet From Microsoft Docs: For .NET, the mechanism for sharing code is NuGet, which defines how packages for .NET are created, hosted, and consumed, and provides the tools for each of those roles.
Open Source The term "open source" refers to something people can modify and share because its design is publicly accessible. Open source software is software with source code that anyone can inspect, modify, and enhance. See opensource.com for more informtion.
Package Format

A type of archive file that consists of programs and accompanying metadata needed by package managers like npm and YUM, or build tools like Maven, to consume that content. 

Package Manager From Wikipedia: A package manager or package management system is a collection of software tools that automates the process of installing, upgrading, configuring, and removing computer programs for a computer's operating system in a consistent manner.
Proxy Repository A repository that is linked to a remote repository. Any request for a component is verified against the local content of the proxy repository. If no local component is found, the request is forwarded to the remote repository. The component is then retrieved and stored locally in the repository manager, which acts as a cache. Subsequent requests for the same component are then fulfilled from the local storage, therefore eliminating the network bandwidth and time overhead of retrieving the component from the remote repository again.
Repository From Wikipedia, a storage location where components such as packages, libraries, binaries, or containers are retrieved and installed.
Repository Manager A dedicated server application used to manage all the repositories your development teams utilize throughout the course of development.
Provisioning Tool From Quora: Provisioning tools are used to install and manage large quantities of computers. When clustering computers, it is generally desirable to keep the hardware and software as homogenous as possible. This helps to ensure that performance is consistent, and that the individual nodes will play nicely with each other. Provisioning tools make managing the software side of clusters easier.

Software Development Life Cycle (SDLC)

The SDLC is composed of a number of defined and distinct work phases used by systems engineers and developers to plan, design, build, test, and deliver software. For more information, please see SDLC - Overview from Tutorials Point.
Source Control A version control system designed to track changes in source code and other text files during the development of a piece of software. For more information, please see Git's About Version Control.