Cloud-based communications surveillance solutions allow firms to address these two key issues. Storage volumes become less of an issue for trading firms and cloud is the natural home of solutions that utilise machine learning, natural language processing (NLP), behavioural analytics and a host of other techniques that can assist in the complex analysis of the unstructured communications data. GreySpark has undertaken research with multiple financial firms to understand their goals for their surveillance platforms in 2021. In this report, GreySpark and Relativity look at the pros and cons of cloud-based communications surveillance solutions and describe the undeniable trend toward their use in this technology space.