The Joint Action on integrating prevention, testing and link to care strategies across HIV, Viral Hepatitis, TB & STIs in Europe” (INTEGRATE) has the overall objective to improve the understanding and implement integrated activities related to early diagnosis of HIV, viral hepatitis, TB and STIs and linkage to prevention and care in partner countries. A number of tools have been developed to reduce transmission, optimize early diagnosis and linkage to care for one or more of these four diseases. INTEGRATE will map relevant existing tools for cross-linking. A peer-review process will identify which of these tools are complimentary or redundant for other disease(s), and which could be adapted or require further innovation. HIV, viral hepatitis, TB and STIs are cross-borders public health threats of concern to Europe that affect vulnerable populations disproportionately and require personalised interventions. As multiple dimensional approaches are required to reduce the public health burden, the most optimal profile of approaches that provide additive effects (and that are reasonably cost-effective) should be identified and implemented broadly. INTEGRATE provides a platform to disseminate and exchange best practice among Member States and facilitate discussions on innovations and emerging issues within the four diseases. In this respect, INTEGRATE is a shared European effort that extends beyond the partners and can create important synergies across European stakeholders, projects and initiatives.