This story is available exclusively to Insider subscribers. Become an Insider and start reading now. 2020 was a turbulent year for Salesforce, with significant executive upheaval and its largest acquisition ever when it bought Slack for $27.7 billion. Insider asked analysts and partners what's ahead for the company in 2021 and they said that Salesforce will have to focus on integrating Slack to prove that the acquisition was worth the cost. They're expecting the company to double down on its industry specific clouds, especially for the public sector, as competition continues to mount from Microsoft, Oracle, and even smaller players. 2020 was a turbulent year for Salesforce.