To conduct an effective gap analysis for a company implementing ISO 9001:2015, you should start by using a gap analysis tool or the standard itself to thoroughly assess each requirement. Have someone knowledgeable in your operations evaluate what your company already does to meet these requirements. Write down what you already do for each requirement and generate a list of requirements that have not yet been addressed. This will help you plan to implement new processes and procedures to address the gaps in your Quality Management System (QMS).