[Koha] Koha and OS upgrade procedure

[vinod mishra]

Hello

I am running Koha 16.11.11 on Debian 8 and Mysql DB. Please suggest how to
upgrade OS, Koha, as well as from MySql to MariaDB.

Will it be ok/easy to Install the latest Version of Debian Koha and Restore
the MYSql backup over MariaDB?  OR

Should I upgrade step by step on the same current server?

With Regards,

Vinod Kumar Mishra,
Assistant Librarian,
Biju Patnaik Central Library (BPCL),
NIT Rourkela,
Sundergadh-769008,
Odisha,
India.
Mob:91+9439420860
ORCID ID: http://orcid.org/0000-0003-4666-7874

*"Spiritual relationship is far more precious than physical. Physical
relationship divorced from spiritual is body without soul" -- Mahatma
Gandhi*