Alternative Data Providers & Aggregators supply non-traditional datasets that enable investment firms, financial analysts, and researchers to extract predictive signals outside conventional reporting cycles. These services transform unstructured information into standardized, machine-readable formats delivered via APIs, data feeds, or marketplace platforms. Core data modalities include consumer transaction and spending patterns, mobile application usage metrics, satellite and geospatial imagery, web traffic analytics, employment and workforce signals, social media sentiment, supply chain tracking, and credit card panel data. The category has evolved from simple web scraping and manual aggregation toward automated ingestion pipelines with embedded analytics, natural language processing for unstructured text, and computer vision for imagery analysis. Many providers now specialize in vertical-specific datasets while aggregator marketplaces consolidate multiple sources under unified licensing and delivery infrastructure.