The best way to conduct an effective gap analysis for a company implementing ISO 9001:2015 is to compare what your company already does with the requirements of the standard. You can use a gap analysis tool specific to ISO 9001:2015 or the standard itself for a thorough analysis. Have someone knowledgeable in your operations assess each requirement and document what you already do that addresses each requirement. Identify the gaps where your company does not meet the standard requirements, and then plan to implement new processes and procedures to address these gaps in your Quality Management System (QMS).