This Deliverable D4.2 Communication and dissemination report I comes under Work Package4: Dissemination and communication. This report is a compilation of the dissemination and communication activities of the European Lightweight Cluster Alliance -ELCA project that project partners have carried out up to M12, from September2020 to August 2021. The deliverable has been prepared by Bydgoszcz Industrial Cluster as a communication and dissemination leader. However, all partners are committed to contributing in “WP4 Dissemination and communication” and have all be involved in communications activities. The report includes the realization of assumptions of D4.1.Communication Plan. It describes internal communication between partners, visual identity, the ELCA website and social media and all other activities taken to disseminate and promote all relevant information about the project.