ISO stands for International Organization for Standardization. It is a non-governmental organization with international influence, headquartered in Geneva, Switzerland.

ISO's mission is to assist in the development and publication of international standards that promote efficiency and safety in the following areas:
Products and services
Methods and processes
Conformity assessment
Management systems

Compliance with ISO standards can bring advantages as follows:
Better quality and consistency of products and services
Increased efficiency and productivity
More customer satisfaction and reputation
Reduction of costs and risks
Supporting international trade

ISO includes standards from more than 160 countries and is operated by a committee of expert members.
The organization has published more than 20,000 standards worldwide.

ISO has developed various standards regarding ESG. Some of these are:
ISO 14001: Environmental Management Systems (EMS) - it provides a framework for organizations to design, implement, manage, and continuously improve their environmental performance.
ISO 26000: Social Responsibility - it includes human rights, business ethics, environmental responsibility, fair labor, consumer issues, and social participation.
ISO 45001: Health and Safety Management.
ISO 20121: Sustainability of Events.
ISO 37001: Anti-Bribery.
ISO 14064: Guide on measuring and reporting greenhouse gas (GHG) emissions and removals. Help organizations measure and manage the environmental impact of carbon emissions.

Learn more: https://www.iso.org/home.html

Now let's see why knowing about these ISOs is good for you:
Provides a deeper understanding of sustainability: ESG factors are becoming increasingly important and it is always useful to have a systematic and well-documented knowledge base.
Improve your decision-making ability: With knowledge and best practices, you can make better decisions or have better resources.
Competitive Advantage and Career Development: Understanding these standards embodies the value and commitment to sustainable development. It can turn out to be a miracle for the organization or company.
Personal Service: Make a better choice in services and products and ultimately contribute to a better and more stable future!

Here are some recommended courses:
https://www.udemy.com/course/iso-140012015-environmental-management-system/?couponCode=ST22FS22724
https://www.udemy.com/course/corporate-esg-and-sustainability-doing-well-and-doing-good/?couponCode=ST22FS22724

What career doors can be opened?

Understanding the standards, along with other job requirements, can open the door to some career options; here are some examples:

Sustainability:
ESG Analyst/Consultant - https://ro.indeed.com/jobsq=ESG+Analyst%2FConsultant&l=&from=searchOnHP&vjk=acb06881ea6a6e2f
Sustainability Project Manager - https://www.indeed.com/q-sustainability-projectmanager-jobs.html?vjk=8add7fcb19062f2f
Sustainability Specialist/Analyst - https://www.indeed.com/jobsq=Sustainability+Specialist&l=&vjk=110975af2cc4d9e2

Corporate Social Responsibility (CSR):
CSR Specialist/Manager - https://www.indeed.com/jobsq=CSR+manager&l=&vjk=007098b7855a44e3
Ethical Sourcing Specialist - https://www.indeed.com/jobs?q=Ethical+Sourcing+Specialist&l=&vjk=8f249a27dcdda13f
Corporate Sustainability Officer - https://www.indeed.com/jobs?q=Corporate+Sustainability+Officer&l=&vjk=321a228436a2a5c1

Diversity, Equity & Inclusion (D&I):
Talent Acquisition Specialist - https://www.indeed.com/jobs?q=Talent+Acquisition+Specialist&l=&vjk=e0d830840aab33b6
D&I Specialist/Manager - https://www.indeed.com/jobs?q=D%26I+Specialist%2F+Manager&l=&from=sug&vjk=cdf3cc7c54b6d04f
Diversity & Inclusion Consultant - https://www.indeed.com/jobs?q=Diversity+%26+Inclusion+Consultant&l=&vjk=60a835ef3f40f5f7