In 2015, Clearbit experienced significant growth, expanding its team from two to seven members and increasing its customer base from 50 to 500, while processing millions of API requests daily. The company's Enrichment API, which consolidates person and company data retrieval, was enhanced with new attributes such as company categories and role standardization to improve data quality. Clearbit also launched the Watchlist API for compliance checks, the Prospector API for finding business contacts, and the Discovery API for leveraging its company database with ElasticSearch. Additionally, several integrations were introduced, including Salesforce, Slack, and Google Sheets, to broaden accessibility and functionality. The year also saw the introduction of free APIs like the Logo and Company Autocomplete APIs, and the development of Connect, a tool for surfacing person and company data within Gmail. Looking ahead, Clearbit aims to balance enhancing existing products with developing new APIs in response to customer demand.