Difference between Amazon S3 and Backblaze B2

1. Amazon S3 :
Amazon S3 stands for Amazon Simple Storage Service. It is a cloud storage service which is provided by Amazon Web Services. It provides object storage through a web service interface. It allows to store any type of objects like data lakes for analytics, data archives, backup and recovery, disaster recovery, hybrid cloud storage and internet applications. It was launched by AWS in 2006. 

2. Backblaze B2 :
Backblaze B2 is a cloud storage service which is provided by Backblaze Incorporation. It is quite similar to the Amazon S3 and other cloud storage services. It is an object storage service. It was launched by Backblaze Incorporation in 2015. It offers 10 GB free storage space. It also provides unlimited storage space for premium accounts. It is also known as B2 cloud storage. 

Difference between Amazon S3 and Backblaze B2 :

AMAZON S3	BACKBLAZE B2
It is owned by Amazon.	It is owned by Backblaze Incorporation.
It was launched in 2006.	It was launched in 2015.
It was developed by Amazon Web Services (AWS).	It was developed by Backblaze.
It offers 5 GB free storage space.	It offers 10 GB free storage space, unlimited free uploads, and 1 GB of free downloads each day.
It provides unlimited storage space for paid.	It also provides unlimited storage space for paid.
Maximum file size in Amazon S3 is 5 TB.	Maximum file size is 5GB.
Files are encrypted at servers.	Files are not locally encrypted.
It supports file versioning.	It also supports file versioning.
It charges comparatively more for additional storage that means it is more costly.	It charges less for additional storage that means it is less costly.
It provides full security of data.	It provides more security of data.
It requires credit-card details for free trial.	It does not require credit-card detail for free services.