# Fundamental concepts

- [Get familiar with Struct PIM](/pim3/fundamental-concepts/get-familiar-with-struct-pim.md): Get familiar with the basic concepts in Struct PIM, so you know what they mean and the context they are used in.
- [Catalogues & categories](/pim3/fundamental-concepts/catalogues-and-categories.md): This article explains the concepts of catalogues and categories and how they are used to organize your products
- [Products & variants](/pim3/fundamental-concepts/products-and-variants.md): This article describes the basic concepts around products and variants and how they relate to each other
- [Attributes](/pim3/fundamental-concepts/attributes.md): Attributes are one of the core concepts in the system and function as the building blocks of products, variants, categories and global lists
- [Product structures](/pim3/fundamental-concepts/product-structures.md): Product structures in Struct PIM define tabs, sections, and attributes, customizable in the UI for effective data handling of products and variants.
- [Identifiers](/pim3/fundamental-concepts/identifiers.md): Identifiers in Struct PIM link external keys to internal IDs, enabling efficient updates and retrievals using known external identifiers.
- [Global lists](/pim3/fundamental-concepts/global-lists.md): Global lists is a key element of Struct PIM and one of the building blocks that enable the definition of any data model
- [Collections](/pim3/fundamental-concepts/collections.md)
- [Security management](/pim3/fundamental-concepts/security-management.md)
- [Localization & segmentation](/pim3/fundamental-concepts/localization-and-segmentation.md): Data fields on categories, products, variants, global lists can be localized and even segmented to enable multidimensional data entries for a specific field.
- [Revisions & changelog](/pim3/fundamental-concepts/revisions-and-changelog.md)
- [Dashboard](/pim3/fundamental-concepts/dashboard.md): The dashboard in Struct PIM plays a key role in users day to day work in the system
- [Publications](/pim3/fundamental-concepts/publications.md)
- [Supplier onboarding portal](/pim3/fundamental-concepts/supplier-onboarding-portal.md)