We finally have an explosion of blockchain development platforms. There should be no more excuses on the lack of platform to use for of developing a solution.
Microsoft - Azure blockchain workbench is available https://azure.microsoft.com/en-us/solutions/blockchain/?cdn=disable
Google - Google partnering with Digital Asset and BlockApps to enable customers to "explore ways they might use distributed ledger technology (DLT) frameworks on Google's Cloud Platform (GCP)
IBM - One of the early platforms on the market with great use cases. Go check out it out at https://www.ibm.com/blockchain/getting-started
HPE - HPE is offering a Mission Critical Distributed Ledger Technology (DLT) is a solution that enables customers to run distributed ledger workloads on their platform. I have personally not followed them too much
Oracle - Oracle also announced their BaaS platform based off the Linux foundation hyperledger fabric platform.
Amazon - They already offer their platform that incorporates Hyperledger. Amazon has recently partnered with Kaleido to offer its cloud services on which to host an Enterprise Ethereum-based, open-source blockchain platform. That makes Kaleido the first managed blockchain SaaS available on AWS.
The tough part begins which is establishing a trusted community.