In today’s business landscape, prioritising sustainability is essential for organisations, encompassing considerations of environmental, social, and governance (ESG) factors. While numerous companies aspire to embrace the ESG framework, they face challenges in progressing toward established goals and complying with international standards. This article sheds light on the auditing process of ISO 14001:2015, its connection to sustainability, and the challenges various industries encounter in adopting and adhering to this standard. ISO 14001:2015 is an international standard for Environmental Management Systems (EMS), providing organisations with a systematic approach to address environmental impacts and enhance performance. The standard requires organisations to carefully identify and evaluate their environmental effects. The standard aligns with sustainability by encouraging a life cycle approach and considering social and economic impacts. This connection urges businesses to think about the broader consequences of their actions, covering the areas of economy, society, and the environment. By incorporating sustainability principles into their practices, organisations can effectively manage environmental, social, and economic factors, strengthening their dedication to overall sustainability objectives. Companies wanting to adopt this standard can first start by doing a gap analysis, and identify what their company’s positioning on sustainability and set goals towards achieving ESG targets. However, many companies in industries like information technology, automotive, environmental services, and manufacturing face difficulties related to environmental impacts, compliance obligations, and emergency preparedness. This is a complex subject that many companies are not ready to tackle fully.  These challenges highlight the need for customised solutions for each industry, offering valuable insights for organisations aiming to improve their environmental performance and adopt sustainable practices. In the auditing process, an external perspective enhances effectiveness for both organisations and audit teams. By gathering information from diverse sources, audit teams can fully understand a client's ISO 14001:2015 compliance, providing tailored solutions to support sustainability and compliance. Forward-thinking organisations can use these insights to overcome challenges, seamlessly integrating sustainability principles into their operations and contributing significantly to long-term sustainability goals. Overall, the ISO 14001:2015 auditing process plays a crucial role in promoting sustainability and addressing the complex impact of environmental, social, and economic factors. Organisations can enhance their environmental performance with the guiding processes associated with ISO 14001:2015 to overcome their challenges, paving the way for a more sustainable future.