What is ISO 27000 and what three things does it provide?

ISO 27000 is the "Overview and Vocabulary" standard that defines terms, explains what an ISMS is, and provides an overview of the ISO 27000 standard family.

It provides:

1. Terminology — Defines all terms used across the ISO 27000 family, ensuring everyone speaks the same language
2. ISMS definition — Briefly explains what an Information Security Management System is
3. PDCA explanation — Describes the Plan-Do-Check-Act process approach used in the standards

Good to know: ISO 27000 is freely available (unlike most ISO standards which must be purchased). It's the ideal starting point for anyone new to the standard family.

Go deeper:

• ISO/IEC 27000-series (Wikipedia) — ISO 27000 (Overview and Vocabulary) ist als einzige der Familie frei verfügbar und der ideale Einstieg; der Artikel ordnet sie in die Reihe ein.