Identity-as-a-service (IDaaS) vendor Okta recently moved into the spotlight with a successful IPO that raised $187 million of equity capital. The IPO filings gave investors and industry observers new information on how fast the nascent IDaaS market is growing. This report presents insights from the Forrester Data: Identity And Access Management Software Forecast, 2016 To 2021 (Global) and discusses our outlook on the IDaaS market.