Difference between Amazon Drive and Mega

Amazon Drive

Amazon Drive is a cloud storage service launched by Amazon in 2011, it’s a very safe and secure cloud infrastructure which is well designed and reliable using D3 services (same as many cloud companies that use it to store data). The drive leverages resources from AWS (Amazon Web Services) and is built on top of it.

They offer 5 GB of free storage which can be upgraded on payment and is built into Amazon Fire TV and Amazon Video application.
Amazon Drive enables users to have features like cloud storage, file sharing and photo printing (Applicable only in specific countries).
It even has multilingual support which enables users all across the globe to use it in their regional language.
Data can be accessed and transferred from multiple devices including mobile applications and desktop web browsers.
Amazon Drive is compatible with almost all devices including mac and windows. Though it has many of the mentioned merits they also have some demerits.
Amazon Drive can only be used for personal and non-commercial uses, one cannot use it for commercial purposes or any businesses.
Amazon does not provide automatic file synchronisation/backup on the web, disabling people from accessing their latest desktop version of all their documents and images.

Amazon Drive's services are unavailable in certain countries/zones.

MEGA

MEGA is a cloud-based service that can be accessed from any device or platform with Internet access. MEGA was created on January 20, 2013, exactly one year after the US government infamously destroyed Megaupload.

It was formed by Kim Dotcom, Mathias Ortmann, and Bram van der Kolk, the same guys who founded Megaupload. Dotcom excelled at marketing and fundraising despite not being engaged in MEGA's design or technical execution. He sold most of his shares and stood down as a Director within a year to pursue new interests.

MEGA is one of the safest clouds available since it uses 128-bit Advanced Encryption Standard (AES) key derived from your password to encrypt and decrypt your files and folders. This means that when a user uploads a file, only the user, not Mega's servers, may decrypt the data. It also contains a security feature that requires two-factor verification, making it safer to use.
MEGA offers 15 GB of permanent free storage and up to 50 GB of storage space including 35 GB of temporary storage to its users. They also provide users with features such as file sharing, file versioning, and secured shared links that open with a key.
MEGA also offers their applications across all platforms and has a maximum storage space of 16 TB.
Clients are also provided with annual transparency reports.