What is the triangle of project management?

The triangle of project management is composed of time, cost, and scope, which together influence quality. This concept is often referred to as the 'iron triangle' or 'triple constraints'. The idea is that altering one aspect, such as the project's budget, timeline, or scope, will consequently impact at least one of the other elements.

Last edited on: 28 Apr 2026
Can a project belong to more than one programme?
Do project managers write business cases?
How do you compare programme and project management?
How do you plan for a project or programme?
How hard is project management?
How is Agile PM different from traditional PM?
Is project management hard to learn?
Is Scrum Agile or waterfall?
What are KPIs in project management?
What are the 5 phases of the project life cycle?
What are the 5 stages of project management?
What are the 5 W's of project management?
What are the basics of project management?
What are the five phases of a project?
What are the phases of PM?
What are the three most important things in project management?
What do you mean by Agile project management?
What does the Gantt chart stand for?
What is a program vs project life cycle?
What is a project life cycle?
What is Agile PM vs waterfall PM?
What is Agile working in project management?
What is difference between project and program management?
What is project management in simple words?
What is the 80 20 rule for project managers?
What is the Agile methodology in project management?
What is the difference between Agile and waterfall?
What is the difference between enterprise change and project change?
What is the difference between PM and Agile?
What is the difference between programme & project management?
What is the difference between project and programme management?
What is the life cycle of a project?
What is the RACI matrix used for?
What is the triangle of project management?
What is WBS in project management?
What project management means?

Project Management related articles

12 websites for project management templates
image
Listicle of best websites to find project management templates to help you stay organised. Scroll down to read more.
PRINCE2 vs Agile or PRINCE2 Agile?
image
Confused between PRINCE2, Agile, or PRINCE2 Agile? Discover their distinctions and how they can be effectively combined in projects by reading on.
What is PRINCE2 Agile?
image
PRINCE2 Agile is a project management methodology that combines the governance of PRINCE2 with the flexibility and responsiveness of Agile approaches. It enables organisations to deliver projects more effectively by integrating structured project control with iterative delivery techniques.
Project portfolio management tools
image
Explore the features of different project portfolio management tools and how to choose the right one for your needs. Read on for a detailed guide.
PRINCE2 Agile certification
image
Considering PRINCE2 Agile certification? Discover how it integrates PRINCE2 with Agile concepts to advance your project management skills.
Project communication plans
image
Project success heavily depends on having an effective project communication plan. Our thorough guide helps you create an effective strategy to keep stakeholders informed and proactive during every stage of your project.
How to Apply AI Technology to Your Project with Paul Boudreau
image
This webinar provides a concise overview of AI in projects, showcasing practical applications and AI's capabilities. Read on to enhance your project management skills.
Project management apprenticeships
image
Seeking a project management apprenticeship? This guide details the leading five apprenticeship programmes and providers across the UK. Acquire essential skills and start your professional journey while earning money.
Project management methods: a guide to modern approaches
image
Learn about popular project management methods and choose the one that will work best for your team and result in greater efficiency. In this comprehensive guide, you will find the most relevant approaches explained.
Project management examples
image
These project management examples cover a range of industries and situations, showing you what effective project management looks like and highlighting some common project management pitfalls to avoid in your own project management career.
Understanding PMO roles
image
Learn about crucial positions in a Project Management Office (PMO). The article presents important PMO positions together with their impact on successful project management. Continue reading to fully understand the organisational frameworks of PMOs.
Project management tools in 2025
image
Find out about the most efficient project management tools for 2025. This comprehensive guide compares the best software solutions and enables you to select the right one to manage your workflow and complete the project on time.