Currently my subdomain is hosted within same webhotel as my main domain. I would like to change it to point another domain (website on Windows Azure). Subdomain should be accessible all the time during transition, from old or new location as long as it is not down.
My webhotel uses DirectAdmin and for subdomain I have A record pointing subdomain to IP address. That A record and subdomain webpage itself was done with "Subdomain Management" tool in DirectAdmin. What is the best way to redirect subdomain to new host? What if I modify .htaccess with redirect to new doamin? Does .htaccess override my A record or would this cause some issues? Any better solutions to transfer the subdomain? Thanks.