ClickHouse Cloud is offering $300 in credits for new users who want to start using their cloud-based data warehousing platform. The company has been focusing on vector search capabilities, which are being used to improve the functionality of traditional search engines like Elasticsearch and Solr. Vector search uses machine learning algorithms to represent content as vectors, allowing for more accurate and efficient searching across different data types such as text, images, and audio. ClickHouse supports vector storage and retrieval, making it a suitable choice for applications that require semantic search capabilities. The company's focus on vector search is part of their broader efforts to provide a scalable and flexible platform for data warehousing and analytics.