- Jordan Valdma from TransferWise gave a talk about gateways, services, and APIs at TransferWise. - The talk covered the history of microservices, designing RESTful APIs, and security considerations for microservices including OAuth 2.0 flows, JSON Web Tokens, and combining JWT with OAuth tokens. - Tips were provided for designing RESTful APIs, gateways, services, and security including focusing on interfaces, getting early feedback, and decoupling from data sources.