“We have elected to put our money and faith in a mathematical framework that is free of politics and human error.”Tyler Winklevoss, Co-creator of Facebook
Blockchain uses Peer-to-Peer networks, it is like having your own cloud which no one accesses but you and any internal or external stakeholder that is provided with access. It is immutable as all data that is logged cannot be changed or removed (it can be reversed) thus nothing can be manipulated without a log of it.
Microservices is the distributed architecture where system functions and features operate independently. Instead of using a single server to run an entire system; system operations and functions are executed upon demand from a distributed network of devices.